1. Introduction
This manual provides essential information for the safe and effective operation, setup, and maintenance of your MassaMAX MT339 4D Massage Chair. Please read this manual thoroughly before initial use and retain it for future reference.

Image 1.1: The MassaMAX MT339 4D Massage Chair in Deep Black, showcasing its design and a user relaxing.
2. Safety Information
To ensure safe operation, always adhere to the following guidelines:
- Read all instructions before using the massage chair.
- Do not use the chair if you have any medical conditions that may be aggravated by massage, or if you are pregnant. Consult a physician prior to use.
- Keep children and pets away from the chair during operation.
- Ensure the power cord is not damaged and is properly connected to a grounded outlet.
- Do not attempt to disassemble or repair the chair yourself. Contact customer support for service.
- Avoid prolonged use. Recommended session duration is 15-20 minutes.
- Do not use the chair in a damp environment or near water.
3. Product Overview
3.1 Key Features
- Advanced 4D Massage Mechanism: Provides deep, therapeutic massage with adjustable depth, width, height, and speed.
- Automatic Extendable Footrest: Adjusts to user height for optimal comfort.
- Deep Yoga Stretch Function: Enhances flexibility and promotes relaxation.
- AI Voice Control & Touch Screen: Offers convenient control options.
- Zero Gravity Recline: Positions the body to minimize spinal pressure.
- Graphene Back Heating Therapy: Targets the lower back for warmth and comfort.
- Full Body Airbag Massage: Compresses and releases various body areas for circulation and relaxation.
- Rejuvenating Foot Rollers: Provides targeted massage to the soles of the feet.
- 15 Preset Automatic Programs: Offers a variety of massage experiences.
- Long SL Track: Covers the neck, shoulders, back, waist, and hips for comprehensive massage.
3.2 Components
The MassaMAX MT339 massage chair consists of the main chair body, armrests, footrest, and a control panel (touch screen).

Image 3.1: Top-down view of the MassaMAX MT339 massage chair, showing the internal structure and cushioning.

Image 3.2: Illustration of the advanced 4D massage mechanism, highlighting its multi-directional movement capabilities.
4. Setup Instructions
Follow these steps for initial setup:
- Unpacking: Carefully remove all components from the packaging. Retain packaging materials for potential future transport or service.
- Placement: Position the chair on a flat, stable surface. Ensure sufficient space around the chair for recline and footrest extension (refer to dimensions in Section 7).
- Assembly: Attach the footrest and any other detachable components as per the included quick-start guide. Ensure all connections are secure.
- Power Connection: Plug the power cord into a grounded electrical outlet.
- Initial Power On: Locate the main power switch (usually at the back or side of the chair) and turn it on.

Image 4.1: The MassaMAX MT339 massage chair positioned in a home environment, demonstrating space requirements.
5. Operating Instructions
5.1 Control Panel (Touch Screen)
The integrated touch screen provides intuitive access to all chair functions. Navigate through menus to select massage programs, adjust settings, and control specific features.
5.2 AI Voice Control
The chair supports voice commands for hands-free operation. Activate voice control and speak clear commands such as:
- "Massage on" / "Massage off"
- "Full body massage"
- "Neck and shoulder massage"
- "Back and waist massage"
- "Comfort massage" / "Relax massage"
- "Stretch massage"
- "Up the seat position" / "Down the seat position"
- "Open the air pressure" / "Close the air pressure"

Image 5.1: Visual representation of available AI Voice Control commands for the massage chair.
5.3 Automatic Body Scan
Upon starting a program, the chair performs an automatic body scan to detect your body shape and adjust the massage rollers for personalized treatment.
5.4 Massage Programs and Functions
- Preset Programs: Choose from 15 automatic programs designed for various needs (e.g., relaxation, deep tissue, sleep).
- Zero Gravity: Select the zero gravity recline position to elevate your legs above your heart, reducing pressure on the spine.
- Deep Yoga Stretch: This program gently stretches your body, promoting flexibility and relieving tension.
- Heating Therapy: Activate the graphene heating function for warmth in the lower back area.
- Foot Rollers: Turn on the foot rollers for a stimulating foot massage.
- Airbag Massage: Adjust the intensity of the full-body airbag compression.
- Manual Adjustments: Customize massage techniques (Shiatsu, Kneading, Tapping, Knocking), intensity, speed, and roller positions.

Image 5.2: Depiction of the yoga stretching function, showing how the chair gently extends the user's body.

Image 5.3: The automatic calfrest extension feature, illustrating its adjustable movement.

Image 5.4: Icons representing different massage techniques: Shiatsu, Kneading, Knocking, Tapping, and combinations.

Image 5.5: Diagram showing the heating therapy zones in the lower back region of the chair.
6. Maintenance
Proper maintenance ensures the longevity and performance of your massage chair:
- Cleaning: Wipe clean the chair's surfaces with a soft, damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Storage: When not in use for extended periods, unplug the chair and cover it to protect from dust.
- Inspection: Periodically check the power cord and connections for any signs of damage.
7. Troubleshooting
If you encounter issues with your MassaMAX MT339, refer to the following common troubleshooting steps:
- Chair does not power on: Ensure the power cord is securely plugged into a working outlet and the main power switch is on. Check the circuit breaker.
- Massage rollers are not moving: Verify that a massage program is selected and the chair is not in a paused state.
- Voice control is unresponsive: Ensure you are speaking clearly and within range of the microphone. Check if the voice control feature is enabled in the settings.
- Unusual noises: Turn off the chair immediately and unplug it. Contact customer support for assistance.
For issues not resolved by these steps, please contact MassaMAX customer support.
8. Specifications
| Specification | Detail |
|---|---|
| Brand | MassaMAX |
| Model Name | MT339 |
| Color | Deep Black |
| Product Dimensions (D x W x H) | 69" x 30" x 35" |
| Item Weight | 191.4 pounds |
| Maximum Weight Recommendation | 300 Pounds |
| Special Features | Arm Rest, Cushion Availability, Ergonomic, Heated, Reclining |
| Product Care Instructions | Wipe Clean |
| Recommended Uses | Relaxing |
| Room Type | Bedroom, Living Room, Office |
| Age Range (Description) | 16+ |
| Seat Depth | 22 inches |
| Fill Material | Foam |
| UPC | 850036071334 |

Image 7.1: Diagram illustrating the dimensions of the MassaMAX MT339 massage chair.
9. Warranty and Support
MassaMAX is committed to providing excellent customer service and product support.
- Warranty: Your MassaMAX MT339 massage chair comes with a 3-year warranty. Please retain your proof of purchase.
- Customer Support: We offer 24/7 customer support. For assistance, you can contact us via phone or by sending a message.
- Service Locations: MassaMAX has over 50 showrooms across the United States. Contact us to find your nearest location for product demonstrations or service inquiries.
Contacting Support
To contact our service team, you can:
- Scan the QR code below with your smartphone.
- Click the "Ask a question" link on our seller page.

Image 9.1: QR code for quick access to MassaMAX customer service.
Alternatively, visit our seller page: MassaMAX Seller Page