1. Introduction
Thank you for choosing the ONIKUMA Type-GT887 Four-Mode Wireless Bluetooth Headset. This headset is designed to provide a versatile audio experience with multiple connectivity options, ultra-long battery life, and ultra-low latency, making it ideal for gaming and everyday use. This manual will guide you through the setup, operation, and maintenance of your new headset.

Image: ONIKUMA GT887 Headset with included USB-A and Type-C wireless dongles.
2. Package Contents
Please check the package for the following items:
- ONIKUMA GT887 Wireless Headset
- USB-C Charging Cable
- 2.4G USB Wireless Dongle
- 2.4G Type-C Wireless Dongle
- User Manual (this document)

Image: Contents of the ONIKUMA GT887 package.
3. Product Overview
The ONIKUMA GT887 features intuitive controls and a rotatable microphone for clear communication.
3.1. Controls and Indicators

Image: Detailed view of headset buttons and their functions.
- Wireless / 2.4G Switch: Toggles between wireless modes.
- Previous Track Button: Short press for previous track.
- Power Button: Long press to Power On/Off. Short press to Play/Pause/Answer/End Call. Long press to reject call when ringing. Double press to activate voice assistant.
- Next Track Button: Short press for next track.
- Volume Scroll Wheel: Toggle to adjust volume.
3.2. Rotatable Microphone
The headset is equipped with a 120° free rotation microphone with high-definition noise reduction, ensuring clear voice pickup and flexible positioning.

Image: Rotatable microphone feature.
4. Setup and Connectivity
The GT887 headset supports four connectivity modes: USB 2.4GHz, Type-C 2.4GHz, Bluetooth Wireless, and Wired connection.

Image: Four-mode connectivity options and compatible devices.
4.1. 2.4G Wireless Connection (USB-A or Type-C Dongle)
- Plug the appropriate 2.4G wireless dongle (USB-A or Type-C) into your device (PC, PS4/PS5, Switch dock).
- Ensure the headset is powered on and the "Wireless / 2.4G" switch is set to the 2.4G mode.
- The headset should automatically connect to the dongle. An indicator light on the headset will confirm connection.
- Adjust volume using the scroll wheel on the headset or your device's settings.
4.2. Bluetooth Wireless Connection
- Ensure the headset is powered on and the "Wireless / 2.4G" switch is set to Bluetooth mode.
- The headset will enter pairing mode (indicator light may flash).
- On your device (smartphone, tablet, PC), go to Bluetooth settings and search for "ONIKUMA GT887".
- Select the headset to pair. Once connected, the indicator light will stabilize.
4.3. Wired Connection
- Connect a 3.5mm audio cable (not included) from the headset's audio jack to your device's audio output.
- The headset will operate in wired mode, bypassing wireless functions.
5. Operating Instructions
5.1. Power On/Off
- Power On: Long press the Power Button until the indicator light turns on.
- Power Off: Long press the Power Button until the indicator light turns off.
5.2. Audio Playback
- Play/Pause: Short press the Power Button.
- Next Track: Short press the Next Track Button.
- Previous Track: Short press the Previous Track Button.
- Volume Control: Toggle the Volume Scroll Wheel up or down to adjust the volume.
5.3. Call Management
- Answer/End Call: Short press the Power Button during an incoming call or to end an active call.
- Reject Call: Long press the Power Button when the phone is ringing.
5.4. Voice Assistant
- Activate Voice Assistant: Double press the Power Button.
6. Charging
The GT887 headset is equipped with a built-in 950mAh high-capacity battery.

Image: Battery capacity and usage times.
- Connect the supplied USB-C charging cable to the headset's charging port and the other end to a USB power source (e.g., computer USB port, wall adapter).
- The indicator light will show charging status (e.g., red for charging, off or blue for fully charged).
- A full charge takes approximately 2 hours.
- The headset provides approximately 60 hours of playback duration on a full charge.
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the headset. Do not use harsh chemicals or abrasive materials.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the headset regularly, even if not in use for extended periods.
- Avoid Water: This headset is not waterproof. Avoid exposure to water or excessive moisture.
8. Troubleshooting
- No Sound:
- Check if the headset is powered on and connected correctly (Bluetooth, 2.4G dongle, or wired).
- Ensure the volume on both the headset and your device is turned up.
- Verify that the correct audio output device is selected in your device's sound settings.
- Cannot Connect Wirelessly:
- Ensure the headset is in the correct wireless mode (2.4G or Bluetooth).
- For Bluetooth, ensure the headset is in pairing mode and visible to your device.
- For 2.4G, ensure the dongle is properly inserted and the headset is within range.
- Try restarting both the headset and your device.
- Microphone Not Working:
- Ensure the microphone is not muted (check for a mute button on the headset or in software settings).
- Verify that the headset microphone is selected as the input device in your device's sound settings.
- Adjust the microphone's position for optimal voice pickup.
- Charging Issues:
- Ensure the charging cable is securely connected to both the headset and the power source.
- Try using a different USB port or charging adapter.
- Check if the charging cable is damaged.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | ONIKUMA |
| Model | GT887 |
| Wireless Version | V5.4 |
| Communication | Wireless+Wired (Bluetooth, 2.4G, 3.5mm) |
| Rated Power | 5V/600mA |
| Frequency Range | 20Hz-20KHz |
| Transmission Distance | About 15m |
| Playback Time | About 60H |
| Charging Time | About 2H |
| Battery Capacity | 950mAh |
| Sensitivity | 117dB |
| Impedance | 32Ω±15% |
| Charging Interface | TYPE-C USB |
| Material | ABS |
| Weight | 400g |
10. User Tips
- For optimal gaming performance, utilize the 2.4G wireless connection for its ultra-low latency.
- When switching between devices, remember to adjust the "Wireless / 2.4G" switch on the headset to the appropriate mode.
- Regularly check for firmware updates from the manufacturer's website to ensure the best performance and compatibility.
- To maximize comfort during long sessions, adjust the headband and earcups to fit snugly without excessive pressure.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official ONIKUMA website or contact your retailer. Keep your purchase receipt as proof of purchase.





