OS-Pro 4D DuoMax MASSAGE CHAIR

Safety Precautions (must be observed)

Please read all relevant instructions carefully before use. The notes marked here will help you to use the product safely and correctly. In order to clearly indicate the extent of harm and damage, precautions are divided into "Warning" and "Caution" that may be caused by incorrect use. Both of them are important for safety and must be followed.

⚠️ Warning: Indicates that serious injury or death may result from improper use.

? Caution: Indicates that misuse may cause minor injury or property damage.

Please pay attention to the symbol before each safety item.

? Forbidden: Absolute prohibition

The following populations should not use this product

? The device is not intended for use by persons (including children) with physical disabilities, sensory or neurological impairments or who lack experience and common sense, unless they are supervised and instructed in the use of the device by those responsible for their safety. Children must be supervised to ensure they do not play with instruments.

• Patients with osteoporosis.
• Patients with heart disease or wearing electronic medical devices such as a pacemaker.
• People who have a fever.
• Pregnant women or women on their menstrual period.
• Patients who are injured or have a skin disease.
• When unsupervised, any children are under the age of 14 and those unconscious are not allowed to use this product.
• People who are told by their physicians to have rest or who feel unwell.
• People whose bodies are wet are forbidden to use this product.
• This product has a hot surface. Persons insensitive to heat must pay attention when using this product.

If the supply cord is damaged, to avoid danger, it must be replaced by a professional from the manufacturer, its maintenance department or similar department.

Important safety warnings

• ⚠️ Do not allow children to touch any movable part of this product.
• Use the well-grounded power supply unit suitable for this product.
• Pull out the plug after use or before cleaning to avoid any physical injury or damage to the product.
• Operate this product as instructed in this manual.
• Do not use any parts or accessories which are not recommended.
• Do not use this product outdoors.
• Please read the Operation Instructions carefully before operation.
• Never use this product for any other purpose not listed herein.
• 20 minutes of usage each time is recommended.
• Do not use this product if the cover or leather is broken or damaged.
• Do not drop anything into this product.
• Never fall asleep while using this product.
• Do not use this product if you are drunk or feel unwell.
• Do not use this product within one hour after a meal.
• Do not use this product with excessive force to avoid any injury.

Safety precautions

• ? Check whether voltage is consistent with the specification of this product.
• Never insert or pull out the plug with a wet hand.
• Do not let water flow into this product to avoid electric shock or cause damage to this product.
• Do not pull the power cord when plugging or unplugging it. Rough handling is forbidden.
• Do not damage the wire or modify the circuit of this product.
• Do not clean live parts of this product with a wet cloth such as a power switch and plug.
• Be away from this product in case of power failure to avoid any injury if power is restored suddenly.
• Stop using this product at once while it works abnormal, and consult your local supplier.
• Stop using this product if you feel unwell, and consult your health care practitioner.

Storage conditions

? Storage room temperature: 41°F to 104°F.

Relative humidity (RH) between 20% and 80%; free of corrosive gases, and a well-ventilated room.

Product service and maintenance

? This product should be maintained by the service center designated by the manufacturer only. No user should disassemble or maintain it without permission.

• Do not forget to turn off the main power switch after usage.
• Do not use this product if the power socket becomes loose.
• If this product will be left unused for a long period of time, it is necessary to roll up the power cord of this product and store this product in a dry and dust-free environment.
• Do not store this product at a high temperature or near open flame.
• Avoid prolonged exposure to direct sunshine.
• Please clean this product with dry cloth. Never use thinner, benzene or alcohol.
• The mechanical components of this product are specially designed and manufactured, so no special maintenance is needed.
• Do not use a sharp object to stab at this product.
• Do not roll or pull this product on any uneven ground. Instead, it should be lifted before moving.
• Please use this product intermittently. Do not keep it working continuously for a long period of time.

Operating environment

• ? Do not use this product in a very moist environment such as the bathroom.
• Stop using this product immediately when the ambient temperature changes sharply.
• Do not use this product in any heavily-dusty or caustic environment.
• Do not use this product in a small space or a place without good ventilation.

Solutions to ordinary malfunctions

• ? If the motor sounds during operation of this product, this is the normal operation sound.
• If the controller cannot work normally, check whether the plug and the power socket are connected reliably, and whether the power switch is turned on.
• If the rated working time is over, this product will automatically activate the power-off button; If this product keeps operating for a long period of time, the temperature protector will stop this product automatically. The product can be used again after half an hour.

Installation Parts

Calf Installation Instructions

1. After power-on, lay the backrest frame down with the remote control.
2. Insert the harness connector and the air pipe on the side of the steel frame respectively into the position corresponding to the armrest (Figure 1).
3. Lift the armrest with inserted air pipe and wire, and hang all hooks to the armrest on both sides of the steel frame (Figure 2).
4. Put the roller at the rear end of the armrest against the surface of the armrest fixture (Figure 3) and lower the armrest backward and downward. Then push the armrest backward, and finally lock it with two M5 screws (Figure 4).

Figure 1: Illustration showing harness connector and air pipe insertion.

Figure 2: Illustration showing armrest hooks being attached.

Figure 3: Illustration showing roller placement against armrest fixture.

Figure 4: Illustration showing armrest being secured with M5 screws.

Calf mechanism installation instructions

1. Insert the cable and air pipe of the calf mechanism, respectively, into the sockets at the front of the steel frame assembly (Figure 1).
2. After the connection is completed, open the calf mechanism fixing covers on both sides of the steel frame assembly (Figure 2).
3. Raise the calf mechanism and put it into the slot and cover the fixing cover and finally fix it in place with 2 M4 screws (Figure 3).

Figure 1: Illustration of calf mechanism cable and air pipe connection.

Figure 2: Illustration showing calf mechanism fixing covers being opened.

Figure 3: Illustration of calf mechanism being secured with M4 screws.

Installation instructions for touch screen remote control holder

1. Align the holder with the front hole of armrest (right) and lock it with M5 screws (Figure 1).
2. Align the holder trim with the holder and press down along the holder rod to the end (Figure 2).
3. After the entire holder is installed, shake the holder gently to check whether it is firmly installed; holder installation is complete (Figure 3).

Figure 1: Illustration of remote control holder alignment and M5 screw insertion.

Figure 2: Illustration of holder trim being pressed down.

Figure 3: Illustration of the completed remote control holder installation.

Place massage chair

Installation placement

Make sure there is enough space for the massage chair to be tilted at least 4 inches (? 4 inches).

Do not expose the massage chair directly to high temperature environments due to sunlight (e.g., near heating equipment), and place it where it can avoid high temperature and direct sunlight. It is recommended to lay a soft cushion for long-term use in a designated location. When laying the cushion, the size of the cushion should be enough to cover the range where the machine touches the floor and the range where your feet touch the floor.

Product lift instruction

? Require team work to lift and move the chair to avoid injury.

1. Please lift the massage chair to move it on vulnerable ground such as a wooden floor.
2. When moving on a similar wooden floor, it is recommended to lift it. Avoid damage to the casters. When the floor is lifted and moved to the designated position, be careful to keep your hands out of the way to avoid injury, and be careful of your feet being crushed. Do not let go of the unit until the unit is completely flat, the floor may be damaged, therefore, it is recommended to place mats, etc. on the floor.

Move method

Use the rear casters to move the massage chair. Move the chair by tilting it down and backward about 45° (? 45°) as shown in the diagram.

NOTE: Excessive force to tilt will cause the chair to tip over completely and product damage.

1. Before moving, please shut down the machine properly to reset the whole machine, and then cut off the power.
2. Please keep the chair vacant when moving. (People, pets, or clutter will not be able to stay on the chair.)
3. When moving, do not cross a drop barrier higher than 2mm or a gap greater than 5mm.
4. When using casters to move this product, single continuous movement is not supported; if the distance exceeds 164ft (approx. 50 meters), please make this product move slowly and evenly.

Diagram showing the chair tilted backward for moving.

How to disassemble and use headrest cushion and backrest cushion

Using a headrest cushion can reduce the intensity of kneading massage on the neck and shoulders, and you can decide whether to use a headrest cushion according to your needs (recommended to use a headrest cushion). The backrest cushion and the backrest are connected by a zipper (1 ?), and the headrest cushion and the backrest cushion are connected by a zipper (2 ?).

Illustration showing two zippers labeled 1 and 2, connecting cushions.

Before use

Check around

? Make sure that there are no people, pets, and other objects around the unit.

Illustration showing the massage chair with icons of a cat, a person, and a toy, indicating to check the surroundings.

Make sure there are no foreign objects in the gaps of the machine

? Before massaging, make sure that no foreign objects are caught in the legs, feet, etc. Under no circumstances allow hands, feet, and head to penetrate into the area between the lower leg mechanism and main body, or the area between the armrest and the capsule. Under no circumstances should hands, feet, or head sink under the fabric or leather covering of the massage area.

Illustration showing the massage chair with areas highlighted where foreign objects should not be placed, and indicating not to insert body parts.

Turn on the power

? 1. Plug in power cord (?).

? 2. Schematic diagram of power on.

? 3. Turn on the power switch ("I" position) (ON).

WARN: Please check the power cord and plug for damage before use.

Please supply power to this product in accordance with the working power requirements of this product's calibration.

It is strictly forbidden to use a power supply other than the nominal power supply of this product.

It is strictly forbidden to connect various power conversion devices without authorization to supply power to this product.

Diagram showing power cord connection and power switch.

Product Structure

Description of Components

• 1. Large head cushion
• 2. Small head cushion
• 3. Remote controller
• 4. Arm air pressure
• 5. Leg massage unit
• 6. Shoulder air pressure
• 7. Ambient lighting on the armrest
• 8. Armrest Shortcut Keys
• 9. Health sensor
• 10. Shoulder mechanism
• Back cushion
• 11. Side panel
• 12. Under the armrest
• Ambient lighting

Diagram showing a top-down view of the massage chair with numbered components.

Schematic view of functional distribution

• 13. Shoulder: Airbag massage
• 14. Arm: Remote control holder, Voice control function, Arm simulator massage
• 15. Hand: Airbag massage
• 16. Leg: Airbag massage
• 17. Sole: Roller massage
• 18. Both sides of the head: Audio music playback
• 19. Arm: Wireless charger, USB charging port, Arm simulator massage
• 20. Head and neck to bottom: Dual mechanical core, Heating massage
• 21. Shoulder, back, waist, abdomen: Heating function
• 22. Leg: Air sac massage, Kneading function, Calf movement massage

Diagram showing a schematic view of the massage chair with numbered functional areas.

How to use the shawl

It is provided with a unique shawl assembly, with innovative heating functions on the shoulder, back, waist and abdomen and heating with graphene. Users can place the shawl at different massage positions according to massage requirements. When the shawl assembly is placed at the shoulder position, it will heat the acupoints such as Bingfeng, Tianzong, Yunmen and Qihu around the shoulder and clavicle by graphene heating, effectively relieving symptoms such as scapulohumeral periarthritis and cough, and removing cold and moisture from shoulder joints.

When the shawl assembly is placed on the abdomen and back (dual-purpose), through graphene heating, it plays the role of dispelling cold and relieving pain, warming channels and removing blood stasis in the back and abdomen, distributing Qi and blood of the back and abdomen meridian, alleviating the symptoms such as irregular menstruation and dysmenorrhea for women, relieving low back pain and kidney discomfort, warming intestines and stomach and clearing intestinal cold, with a good effect on some people with deficiency of qi and deficiency of spleen and stomach.

Illustration showing the heating area of the shawl.

Schematic diagram of use on back and waist.

Schematic diagram of use on shoulder and abdomen.

Remote controller keys instruction

Diagram showing the remote controller with numbered buttons (01-08) and a main information interface (12) with status indicators (13-15) and function keys (16-19).

Main Information Interface (12)

Displays current status, massage program, time, and function selections.

Function Buttons (13-19)

• 13. Shoulder Foot Code Area: Selects massage area or foot size.
• 14. Manual/Auto/Angle/Settings: Navigation and mode selection.
• 15. Current status key: View current massage chair status.
• 16. Automatic function menu key: Select automatic massage program.
• 17. Remote function menu key: Remotely set massage functions.
• 18. Seat adjustment menu key: Access sitting posture adjustment.
• 19. Setting menu key: Access the general settings interface.

Armrest Shortcut Key Description (01-08)

• 01. On/off key (?): Long press for 3 seconds to turn on/off the massage chair. Short press pause/run.
• 02. Zero-gravity key (?): Adjusts zero-gravity angle automatically. Long press to restore to initial angle.
• 03. Automatic mode key: Switches automatic massage programs.
• 04. Voice key (?️): Long press to turn voice assistant on/off. Short press to wake up assistant.
• 05. 4D intensity knob key: Turn clockwise to increase 4D intensity, counterclockwise to decrease.
• 06. Linkage up/down knob key: Controls backrest and calf frame movement for rising or falling.
• 07. Calf up/down knob key: Controls calf unit rising and falling, and foot length detection.
• 08. Foot stretching knob key: Controls foot mechanism stretching or shortening.

Remote Controller Keys Instruction (Bottom Row)

• 01. Power (?)
• 02. Pause (⏸️)
• 03. Belt heat (?)
• 04. Core heat (?)
• 05. O2-Ion (?)
• 06. Roller (?)
• 07. Calf (?)
• 08. Voice (?️)
• 09. Intensity selection key: Select automatic massage intensities (Gentle, Soothing, Strong).
• 10. Button on/off key: Turn on or off the massage chair.
• 11. Lower body air pressure adjustment key: Adjust lower body air pressure.
• 12. Massage range key: Choose corresponding massage part.
• 13. Foot size selection key: Select suitable foot size.
• 14. Shoulder position adjustment key: Adjust shoulder position and confirm massage criterion.

Other Interface Keys (Top Row)

• 15. Current status key: View current massage chair status.
• 16. Automatic function menu key: Select automatic massage program.
• 17. Remote function menu key: Remotely set massage function.
• 18. Seat adjustment menu key: Enter sitting posture adjustment interface.
• 19. Setting menu key: Enter the setting menu interface.
• 20. Massage technique selection key: Select massage technique.
• 21. Upper body air pressure intensity key: Adjust upper body air pressure intensity.
• 22. Status display bar key: Display massage program status.
• 23. Air massage selection key: Select air position.
• 24. Time adjustment menu key: Adjust massage time.
• 25. Massage speed key: Adjust massage speed.
• 26. 4D intensity key: Adjust 4D intensity.
• 27. Health detection menu key: Enter health detection interface.
• 28. Custom menu key: Enter custom interface.
• 29. Storage menu key: Enter storage interface.

Operation Instructions

I. Start massage

1. Press the remote controller side button on/off key (?) or long press the armrest on/off key (?).
2. After the system is started, select the massage intensity by clicking on any one of the Gentle, Comfort, or Strong keys on the remote controller to turn on the massage chair and enter the lying state. If no selection is made within 5 minutes, the massage chair will turn off automatically.
3. For automatic angular adjustment, select the automatic program, then the massage chair will be automatically adjusted to zero-gravity angle, and wait until its adjustment is completed. To skip a step, press the skip key (⏭️) to go directly to the next step.
4. Wait until body shape detection is completed, or you can press the skip key (⏭️) to skip detection and start massage directly.

Diagram showing body sensing progress.

For fine adjustment of shoulder position, after body shape detection, the remote controller or a voice prompt will remind the user of fine adjustment of shoulder position. If the massage roller stops at the shoulder position, directly press the OK key (✅) to start massage. If not, use the Up key (⬆️) and Down key (⬇️) to adjust the massage roller to the shoulder position, and then press the OK key (✅) to start the massage. If no operation is made within 20s, the current massage roller position for the shoulder position will be defaulted, and massage will start.

Diagram showing shoulder position adjustment interface.

II. Pause function

(Please use this function after the equipment is turned on)

After the massage chair is turned on, press the pause key (⏸️) to enter the pause state, then all massage functions will be suspended, and press the pause key (⏸️) again to resume the previous massage state. Note: In the pause state, all functions do not work except shutdown.

III. Automatic program

(Please use this function after the chair is turned on)

Automatic program selection

1. Select the Automatic key (?) in the left menu bar to enter the automatic selection interface.
2. In the automatic program selection interface, there are 20 automatic program options available: Total Relax, Stress Release, Full Airbag, Chinese Massage, Thai Massage, Meridian Treatment, Neck & Shoulder Care, Waist Care, Waist & Buttock Shape, Leg & Foot Relieve, President Cosy, Keep Fit, Superior Enjoyable, Office Regimen, Health Recharge, Energy Boost, Lunch Break, Sweet Dream, Brain Refresh, Rejuvenate.
3. Select the desired automatic massage program and click to start massage.

Schematic diagram of automatic massage program selection, showing categories like AI Intelligent, Relaxing and Activating, Exclusive for Family, Overall Relaxation, and specific programs.

Massage scenes (AI Intelligent)

Massage scenes (Relaxing and Activating)

Massage scenes (Exclusive for Family)

Massage scenes (Overall Relaxation)

IV. Remote program

(Please use this function after the equipment is turned on)

Remote program selection

Select the remote key (?) in the left menu bar and click to enter the remote menu to select massage technique, massage area, 4D intensity, massage hand adjustment, massage width, massage speed, air massage, air intensity and other massage functions.

1. Massage technique selection

In the massage technique menu, a total of 11 options are available, including kneading, Tap I, Tap II, kneading and Tap, Shiatsu I, Shiatsu II, shoulder grasp, 4DI, 4DII, 4DIII and 4DIV. (Note: Click the "leftward arrow ⬅️" and "rightward arrow ➡️" button in the remote adjustment menu to scroll left and right to display more massage techniques).

Remote program - Schematic diagram of technique selection, showing icons for Stop, Knead, Tap I, Tap II, Knead&Tap, Shiatsu I, Shiatsu II, Grasp, 4D I, 4D II, 4D III, 4D IV.

Note: Adjustable speed in five gears, adjustable width in five gears, adjustable intensity in five gears.

Current Status - Schematic diagram of technique selection, showing the selected technique and intensity levels.

2. Massage area selection

The massage area menu has five options: Spot, Partial, Full, Upper and Lower. Select the corresponding massage area for massage.

Remote program - Schematic diagram of massage area selection, showing options for Spot, Partial, Full, Upper, Lower.

Note: You can also click the massage area key Area in the "Current Status" interface to select the corresponding massage area in the pop-up menu for massage (this function is a shortcut for switching massage areas in the current status page of the remote program - massage area).

Current Status - Schematic diagram of massage area selection.

3. 4D intensity adjustment

You can adjust 4D intensity in the 4D intensity menu. There are 1~5 gears available for adjustment with 1 being the weakest and 5 being the strongest. The stronger the 4D intensity, the higher the massage roller ejection and the greater the massage strength. Select plus key + or minus key - to reduce the 4D intensity.

Remote program - Schematic diagram of 4D intensity adjustment.

Key: + Press this key to increase 4D intensity which is adjustable from 1 to 5.

Key: - Press this key to decrease 4D intensity which is adjustable from 1 to 5.

Note: You can also select the 4D intensity + key 4D + or 4D intensity - key 4D - in the "Home" interface to adjust the 4D intensity. (This function is a shortcut to the 4D intensity in the current status page of the remote program-4D intensity).

Current Status - remote program-4D intensity.

4. Massage hand adjustment

For massage hand adjustment, select the Up arrow (⬆️) or the Down arrow (⬇️) to adjust the massage hand position.

Remote program - Schematic diagram of massage hand adjustment.

5. Massage width adjustment

For massage width, as shown in the figure below, select the massage width to adjust.

Remote program - Schematic diagram of massage width.

(1)The width can be adjusted only when the user enters the remote mode in selecting massage technique or massage area.

(2)The massage width is available from 1 to 5 gears, with 1 being the narrowest and 5 being the widest. Please use the following massage techniques: Patting, Patting II, Finger Pressing, Finger Pressing II, 4D III and 4D IV.

Key: + Press this key to increase massage width which is adjustable from 1 to 5.

Key: - Press this key to decrease massage width which is adjustable from 1 to 5.

6. Massage speed adjustment

For massage speed, as shown in the figure below, select the massage speed to adjust.

Remote program - Schematic diagram of massage speed.

(1)The speed can be adjusted only when the user enters the remote mode in selecting massage technique or massage position.

(2)The massage speed is available from 1 to 5 gears, with 1 being the fastest and 5 being the slowest. The speed cannot be adjusted when the massage technique stops.

Key: + Press this key to increase massage speed which is adjustable from 1 to 5.

Key: - Press this key to decrease massage speed which is adjustable from 1 to 5.

Note: You can also select the massage speed + key Speed + or massage speed key Speed - in the "Home" interface to adjust the massage speed.

Current Status - Schematic diagram of massage speed.

7. Air pressure massage

Enter into the air pressure massage menu to choose the air pressure mode as shown in the following figure. Air pressure mode includes upper body, lower body, full body air pressure, and off to close the air pressure function. And in the inner side of the arm with a hand roller massage function, when the whole body air pressure or upper body air pressure is turned on, the hand roller will automatically run with the operation of air pressure, which can relieve the stiffness of the arm muscle.

Remote program-Schematic diagram of air massage, showing Full, Upper body, Lower body options.

Air pressure display showing upper body air pressure, lower body air pressure, and whole body air pressure.

Note: You can also press air massage key Full in the "Home" interface, and select corresponding air mode in the pop-up menu. (This function is a shortcut to the air massage in the current status interface of the remote function - air massage.)

Current status - Schematic diagram of air massage.

8. Air intensity adjustment

For air intensity adjustment, the air function shall be turned on so as to adjust the air intensity, with a total of five adjustable levels, with 1 being the weakest and 5 being the strongest.

Schematic diagram of air intensity adjustment.

Key: + Press this key to increase the air intensity which is adjustable from 1 to -5.

Key: - Press this key to decrease the air intensity which is adjustable from 1 to -5.

Note: Can select the upper body air pressure + key Upper Air+ or the upper body air pressure - key Upper Air- in the "Home" interface to adjust the upper body air pressure intensity; can also select the lower body air pressure + key Lower Air + or the lower body air pressure - key Lower Air- to adjust the lower body air pressure intensity, the air pressure intensity is divided into 5 levels.

Current status - Schematic diagram of air intensity.

V. Seat adjustment

Click the "Angle" (?) button in the menu bar on the left side of the display screen to enter the angle adjustment interface, which includes leg rest telescoping, footrest telescoping, leg rest lifting, linkage lifting, backrest lifting, zero gravity, and other massage functions.

Schematic diagram of sitting posture adjustment, showing options like Leg shorten, Leg extend, Foot shorten, Foot extend, Leg up, Leg down, Whole up, Whole down, Back up, Back down, Zero I, Zero II.

1. Zero-gravity adjustment

2. Telescopic adjustment of footrest

3. Leg unit extension/shortening adjustment

4. Leg unit extension/shortening adjustment

5. Linkage lifting Angle adjustment

6. Backrest unit angular adjustment

VI. Setting

(Please use this function after the equipment is turned on)

Click the "Settings" (⚙️) button in the menu bar on the left side of the display to enter the setting interface, where you can view the product model, software version number, product serial number, and firmware version number. The interface includes language selection settings.

1. Product model, software version, product serial number, and firmware version show the information of current device.
2. Bluetooth (Operation Instructions for Bluetooth Speaker Play)

Click Bluetooth switch to enable or disable the Bluetooth function. After pairing and connecting the sound source device with Bluetooth function (such as mobile phone, MID tablet, etc.) with the Bluetooth module of the massage chair, the music played by the sound source device can be wirelessly transmitted to the sound system of the massage chair through Bluetooth for music playing.

1. Enter the smart device main menu. Open "Settings" and select the "Bluetooth" option. Open "Bluetooth", and Bluetooth will automatically "Search for a New Bluetooth Device".
2. The smart device will search for the corresponding Bluetooth model (e.g. IMCM-XXXX). Click the "Match" button. If you are asked whether to match with the device, you just select "Match" to complete matching.
3. Turn on "Music Player" in the smart device and select the song to play.

Settings interface showing Product number, Software version, Bluetooth, Language, ID code, Firmware version, Voice control, Low power.

3. Voice control

(1) Near the right armrest, say "Hi Alice" or "Hey Alice" to wake up the voice assistant, or press the voice key (?️) on the left armrest to wake up the voice assistant, and the voice assistant replies "I am here" to indicate that it has been awakened.

(2) After waking up the voice assistant, please speak the command within 6 seconds to realize the function control of the massage chair. After the voice assistant responds to the command, you can continue to speak the command. The interval between two adjacent commands cannot exceed 6 seconds, otherwise the voice assistant needs to be re-awakened.

Note: commands 14 and 15 can only be used after command 13.

4. Low-power mode switch

Low-power mode on: In a low-power state, the armrest shortcut keys, voice control functions cannot be used. Low-power mode off: armrest shortcut keys, voice control function can also be used in standby state.

Settings interface showing Low power toggle.

5. Language selection

The language is English by default. Chinese is optional.

Settings interface showing Language selection (English/Chinese).

VII. Health detection

(Please use this function after the equipment is turned on)

1. Health detect starts

Click the "Health" (❤️) button in the menu bar on the left side of the display screen to enter the health detection interface, press the start detection button Start to perform health detection, and then gently place the index finger or middle finger on the sensor. After a few seconds, it will display the real-time data of heart rate, blood oxygen and microcirculation, waiting for the completion of the detection progress.

Health Detection interface showing requirements and start button.

Health check progress indicator showing SpO2, HR, Fatigue index, Microcirculation, and normal reference ranges.

2. Recommended program

When normal detection is completed, it will display the heart rate, blood oxygen, and the fatigue level, respectively. The blood oxygen means with the blood oxygen concentration ranging from 95% to 99% normally. The fatigue levels include Good, Mild, Moderate and Severe. Based on your fatigue level, an automatic program will be recommended for you. Select "Yes" to start using the recommended program and "No" to return to the massage state before the health detection.

Health Detection results screen with options to select a recommended program.

3. No valid data is detected.

If no valid data is detected, the user will be prompted to ask whether to re-detect. Select "Yes" to restart the health detection, and "No" to exit the detection and return to the massage state before the health detection.

Health Detection screen indicating no valid data detected, with Retest and Exit options.

4. Exit health detection.

During health detection, press the Exit key (❌) to exit the detection and return to the massage state before the health detection.

Health Detection screen showing Exit button.

VIII. Custom

(Please use this function after the equipment is turned on)

Click the "Custom" (?) key in the menu bar on the left side of the display to enter the custom setting interface and select either Custom I or Custom II (only if the corresponding custom has been previously set and saved) for massage.

Schematic diagram of Custom interface showing Customise 1 and Customise 2 options.

Click Custom I Setting or Custom II Setting to enter the Custom Setting interface, then select the preferred massage technique whose icon will be highlighted after selection, and select the massage interval, 4D intensity, air massage, massage width, massage speed, air intensity, back heating, calf kneading and other functions, then click Save to save the current settings as Custom I and Custom II. After the settings are saved successfully, the custom program will be immediately available and can be used for the next massage by clicking the saved custom program.

Custom Setting interface showing various massage parameters and a Save button.

IX. Storage

(Please use this function after the equipment is turned on)

Click the "Memory" (?) key in the menu bar on the left side of the display to enter the massage function storage selection interface, with two categories including massage function storage and massage function call. Massage storage includes: Storage I, Storage II and Storage III. Massage call includes: Call I, Call II and Call III.

Memory interface showing Massage Save (Save I, Save II, Save III) and Massage use (Use I, Use II, Use III).

X. Other functions

(Please use this function after the chair is turned on)

In the "Home" interface, select the "Belt heat" (?) key to turn on or off the shawl heating function (for graphene heating). There will be warmth after turning on the heating function for 3 minutes.

In the "Home" interface, select the "Core heat" (?) key to turn on or off Mechanical core heating function (jade heating). There will be warmth after turning on the heating function for 3 minutes.

In the "Home" interface, select the "O2-Ion" (?) button to turn on or off the O2-Ion function.

In the "Home" interface, click the "Roller" (?) button to turn on or off the foot roller massage function, with three adjustable speeds.

In the "Home" interface, select the "Calf" (?) button to turn on or off the calf rubbing massage function; the inner side of the calf is provided with rubbing massage function, and the outer side is provided with airbag squeeze massage function, which can relieve the calf muscle stiffness or tension caused by long standing.

In the "Home" interface, select the "Voice" (?️) key to wake up the voice assistant.

In the "Home" interface, select the "Shoulder Position Adjustment" (⬆️⬇️) button, and press the up and down arrow buttons in the pop-up menu to adjust the shoulder position, with a total of 11 adjustable levels.

In the "Home" interface, press the "foot size selection" (?) button to select the corresponding foot size for massage.

Diagram showing foot size selection options (35-36, 37-38, 39-40, 41-43, 44-46).

In the "Home" interface, select the "massage time adjustment" (⏱️) button, press the plus (+) and minus (-) arrow head buttons in the pop-up menu, you can increase or decrease the massage time. Click the "+" key, the time increased by 5 minutes, the maximum increase to 40 minutes. Click the "-" key, the time decreased by 5 minutes.

In the "Home" interface, select the "Gentle", "Soothing", "Strong" (?) button to select the appropriate massage intensity.

XI. End massage

During massage, press the remote controller touch switch key (?) or press the right armrest switch key (?) to turn the equipment off. Immediately turn off all massage functions, reset the backrest unit and the leg unit, or when the massage timing time arrives, all massage functions will be automatically turned off, with the backrest unit and the leg unit not reset.

Massage chair reset

Please wait for the massage chair to stop completely before getting up.

Cut off the whole machine power supply, as shown in the figure (Schematic diagram of power switch position of the whole machine).

Diagram showing how to turn off the power switch, pull out the power plug, and remove the product connection power cord.

Cleaning and Maintenance

Cleaning synthetic leather and plastic parts

Wipe the leather with a soft, dry cloth. Do not use chemicals such as thinner, gasoline, alcohol, etc. to clean the unit. When using commercially available leather care products (rags), please follow the instructions for use.

If synthetic leather is particularly dirty, wipe it in the following way:

1. Immerse a soft cloth in water or hot water containing 3% to 5% neutral detergent, then wring it out thoroughly.
2. Use the above soft cloth to wipe the leather surface.
3. Wipe off the cleaning solution with a cloth soaked in clean water and thoroughly wrung out.
4. Wipe with a wrung soft cloth.
5. Let it air dry naturally.

When it is difficult to remove stains, please immerse commercially available melamine foam in neutral detergent, and then wipe the machine with it. Do not use a hair dryer to dry the surface.

Be careful when wiping the machine with denim and colored fabrics, as the color of the fabric will stain the surface of the synthetic leather.

Do not keep these parts in contact with plastic for a long time, as this will cause discoloration.

Synthetic leather may be discolored, so when using hair dye, please cover the touched part with a towel.

Troubleshooting

Please feel free to contact the designated service personnel for any questions or doubts about this product.

Product Specifications

• Model: OS-Pro 4D DuoMax
• Name: Massage Chair
• Rated voltage: 110-120V~ 60Hz / 220-240V~ 50Hz/60Hz
• Rated power: 220W
• Rated time: 20min
• Safety structure: Class I