Woojer Strap 4 User Manual

Important Safety Warnings

Warning: Consult a medical doctor before use if you have a heart condition, pacemaker, are pregnant, have a history of blood pressure issues, or any other medical condition.

• Do not use the product while charging.
• Do not replace the battery.
• Do not charge or use the device if it becomes uncomfortably hot.

(Note: Warnings are also provided in French, Spanish, German, and Japanese in the original document.)

Your Woojer Strap

Components:

• 1. Power/Bluetooth Button
• 2. Analog Audio-In Port (3.5mm)
• 3. Digital USB-C Input/Charging Port
• 4. Wired Headphone Jack (3.5mm)
• 5. Swappable Ring
• 6. Volume Up Button
• 7. Volume Down Button
• 8. Sensation Up Button
• 9. Sensation Down Button
• 10. Belt Socket

Charging Your Strap

Connect the USB-C cable to the charging port. The circular LED will gradually illuminate, indicating charging progress until the device is fully charged. Charging takes approximately 2 hours for up to 8 hours of playtime.

[Charging Indicator: LED shows progress from red to yellow to green; full green when complete. Low battery indicated by blinking red circle.]

Woojer App & Firmware Update

Download and install the Woojer App from woojer.com/woojerapp.

To get the most out of your strap, ensure you have the latest firmware. Launch the Woojer App to update.

Connecting and Wearing Your Strap

Powering On/Off

Press and hold the Power Button for 3 seconds to turn the strap on or off.

[Power On: 3s long-press on Power Button. Strap is ON.]

[Power Off: 3s long-press on Power Button. Strap is OFF.]

Wearing the Strap

1. Put on the strap.
2. Buckle up!
3. Tighten the belt.

Wear the strap diagonally across the chest, around your chest, on your waist, or on your spine for different haptic experiences.

Playing Music & Fine-Tuning

Play your music through your connected audio source.

Fine-Tuning Your Experience

• Volume Up Button: ⬆️
• Volume Down Button: ⬇️
• Sensation Up Button: ⬆️
• Sensation Down Button: ⬇️

For adjusting Audio-Haptic Sync, use the Woojer App.

Wired Headphones

If using wired headphones, connect them to the 3.5mm headphone jack.

Bluetooth Pairing

Connecting to a Bluetooth Audio Source

1. Press and hold the Power Button for 5 seconds. The left half-ring will blink red/blue.
2. On your mobile device, locate and pair with "WOOJER STRAP 4".

[Note: Bluetooth icon may remain displayed after connection, even if the signal is briefly lost.]

Connecting to Bluetooth Headphones

1. Press and hold the Power Button and the Volume Up Button together for 5 seconds. The right half-ring will blink red/blue.
2. Set your headphones into pairing mode and place them near the strap.

[Note: When plugging in headphones, the corresponding icon may not appear.]

Connecting Your Gear

The Woojer Strap 4 supports various connections:

• 3.5mm audio input for wired devices.
• USB-C for digital audio and charging.
• Bluetooth for wireless audio streaming.

Mix & Match: Customize your strap by unscrewing the ring and replacing it with a new one, or slide out and replace the elastic band. Discover more accessories at woojer.com/accessories.

LED Behaviors

• Bluetooth Audio Source Pairing Mode: Left half of circle blinking.
• Bluetooth Headphones Pairing Mode: Right half of circle blinking blue/red.
• Searching for Audio Source: Running blue light on the left half of the circle.
• Searching for Bluetooth Headphones: Running blue light on the right half of the circle.
• Audio Source Connected: Solid blue light on the left half.
• Headphones Connected: Solid blue light on the right half.
• Low Battery: Circle blinking red.
• Charging: Gradual filling, color changing from red, through yellow to green.
• Charging Complete: Full green.

Technical Specifications

• Battery: 1SP Li-On Battery 3.7V
• Charging Port: Standard USB-C
• Charging Voltage: 5V
• Charging Time: 3 hours
• Haptic Frequency Response: 1-250Hz
• Audio Frequency Response: 20-20KHz
• Transducer: 1XOsci V2 TRX
• Transducer Impedance: 11Ω
• Audio Output: Aux 3.5mm TRRS, BT Audio A2DP
• Audio Input: Aux 3.5mm TRRS, USB-Stereo Audio, BT Audio A2DP
• Bluetooth: Bluetooth 5.4 Audio, BLE App Control and Update
• Headphones Amp THD: 1%, f = 1 kHz
• Headphones Out S/N Ratio: 98 dB
• Headphones Amplifier Output: 138mW

Warranty

12 months from purchase. Learn more about the warranty at woojer.com/warranty.

Care and Maintenance

• Keep the device dry. Liquids can corrode electronic circuits.
• Do not store in hot or cold areas, as extreme temperatures can damage the device and battery.
• Do not attempt to open the device.
• Do not drop the device; rough handling can break internal components.
• Do not use harsh chemicals, cleaning solvents, or strong detergents.
• If the device does not work properly, contact Woojer technical support at woojer.com/support.

Safety and Warnings (Read Carefully Before Use)

• Contains a rechargeable Lithium-Ion battery; dispose of according to local regulations.
• Not suitable for use by persons with pacemakers.
• Do not use during pregnancy without physician approval.
• Do not use while driving, cycling, or operating motorized vehicles, as this can be a traffic hazard and may be illegal.
• Be cautious when using headphones at high volumes while walking or engaged in other activities. Exercise extreme caution in potentially hazardous situations. Hearing experts advise against continuous loud and extended music play; keep volume moderate to hear ambient sounds.
• If the device overheats, discontinue use and contact technical support.
• Avoid charging at extremely high or low temperatures.
• Liquids can short-circuit the battery, posing a risk of fire or injury.
• Consult your physician before use if you have any physical condition that may limit your ability to play computer games or engage in moderate physical activity.

Regulatory Information

Federal Communications Commission (FCC) Notice

This device complies with Part 15 of the FCC Rules. Operation is subject to two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. If this equipment causes harmful interference to radio or television reception, users are encouraged to try to correct the interference by:

• Reorienting or relocating the receiving antenna.
• Increasing the separation between the equipment and receiver.
• Connecting the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consulting the dealer or an experienced radio/TV technician.

The device has been evaluated to meet general RF exposure requirements and can be used in portable exposure conditions without restriction.

Canada - Industry Canada (IC)

This radio transmitter has been approved by Industry Canada. This Class B digital apparatus complies with Canadian standard ICES-003. This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. The device has been evaluated to meet general RF exposure requirements and can be used in portable exposure conditions without restriction.

(French text regarding IC compliance is also present in the original document.)

Bluetooth

The Woojer Strap Series 4 qualified design listing was achieved in accordance with the Bluetooth qualification process as specified within the Bluetooth specifications.

CE Declaration of Conformity

Woojer Ltd. declares that this Woojer Strap Series 4 product is in conformity with the standards and other normative documents.