1. Introduction
Thank you for choosing the LICAEVEY GD28 Open Ear Headphone. This manual provides essential information for setting up, operating, and maintaining your device. Please read it carefully before use to ensure optimal performance and longevity.
The LICAEVEY GD28 is a single earpiece Bluetooth 5.3 ear clip designed for comfort and clear audio. It features an open-ear design, IPX4 water resistance, and intuitive one-key controls, making it suitable for various activities like running and cycling.

Image: The LICAEVEY GD28 headphone, highlighting its lightweight and comfortable design.
2. Package Contents
Upon opening the package, please verify that all items are present:
- 1 x LICAEVEY GD28 Open Ear Headphone
- 1 x USB Charging Cable
- 1 x User Manual (this document)

Image: The LICAEVEY GD28 headphone shown alongside its USB charging cable.
3. Setup
3.1 Charging the Headphone
Before first use, fully charge the headphone.
- Connect the provided USB charging cable to the charging port on the headphone.
- Connect the other end of the USB cable to a standard USB power adapter (not included) or a computer's USB port.
- The indicator light will show the charging status. A full charge typically takes about 1 hour.
- Once fully charged, disconnect the charging cable. The headphone provides approximately 7 hours of working time on a full charge.

Image: Illustration of the headphone's battery life, indicating up to 7 hours of use.
3.2 Bluetooth Pairing
To connect your LICAEVEY GD28 headphone to a Bluetooth-enabled device:
- Ensure the headphone is charged and turned off.
- Press and hold the multifunction button on the headphone until the indicator light flashes, indicating it is in pairing mode.
- On your device (e.g., smartphone, tablet), go to the Bluetooth settings and turn Bluetooth on.
- Search for available devices. Select "GD28" from the list.
- Once connected, the indicator light on the headphone will change, and you will hear a confirmation tone.
The headphone uses Bluetooth 5.3 technology, providing a stable connection up to 10 meters (393.7-590.6 inches) in accessible areas.
4. Operating Instructions
4.1 Wearing the Headphone
The GD28 features an ergonomic, open-ear clip design for comfortable wear without inserting into the ear canal.
- Gently clip the headphone onto your ear, ensuring the speaker is positioned near your ear canal for optimal sound.
- Adjust the position for a secure and comfortable fit. The design prevents swelling or soreness even during prolonged use.

Image: Visual guide demonstrating the ergonomic open-ear clip design and proper placement on the ear.
4.2 Basic Controls
The headphone features a single multifunction button for easy control of music and calls.

Image: A finger pressing the multifunction button on the headphone, illustrating its single-button control.
- Short Press (once): Play/Pause music or Answer/End a call.
- Long Press: Reject an incoming call.
- Double Click: Play the next song.
- Triple Click: Dial back the last phone number.
4.3 Sound Features
The GD28 delivers HIFI stereo surround sound with a 13MM film loudspeaker and real copper ring for balanced audio.
- High-Fidelity Audio: Experience clear and balanced sound across all frequencies.
- Sound Leakage Prevention: The leakproof earhole design minimizes sound leakage, ensuring your audio experience remains private.
- Noise Reduction: Micro air holes effectively reduce ambient noise for an immersive listening experience.

Image: An exploded view diagram illustrating the internal components of the speaker, highlighting the copper ring and micro air holes for HIFI stereo sound.
5. Maintenance
5.1 Cleaning
To maintain the headphone's performance and appearance:
- Wipe the headphone with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, solvents, or aerosol sprays.
- Avoid getting moisture into any openings.
5.2 Water Resistance (IPX4)
The LICAEVEY GD28 headphone is IPX4 water resistant, meaning it is protected against splashing water from any direction.
- It can withstand sweat and light rain, making it suitable for sports and outdoor activities.
- Important: IPX4 rating does not mean it is waterproof. Do not submerge the headphone in water or expose it to pressurized water jets.
- Ensure the charging port cover (if present) is securely closed to maintain water resistance.

Image: A visual representation of the headphone's IPX4 water resistance, showing it can withstand splashes.
5.3 Storage
Store the headphone in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
If you encounter issues with your LICAEVEY GD28 headphone, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphone does not turn on. | Low battery. | Charge the headphone for at least 1 hour. |
| Cannot pair with device. | Headphone not in pairing mode; Bluetooth off on device; device too far. | Ensure headphone is in pairing mode (flashing indicator). Turn on Bluetooth on your device. Move device closer to headphone (within 10 meters). |
| No sound or poor sound quality. | Volume too low; headphone not properly connected; interference. | Increase volume on both headphone and device. Re-pair the headphone. Move away from other wireless devices. |
| Controls not responding. | Temporary software glitch. | Turn off the headphone and turn it back on. If issue persists, try resetting the device (refer to manufacturer support if a specific reset procedure is not listed). |
7. Specifications
| Feature | Detail |
|---|---|
| Model | GD28 |
| Bluetooth Version | 5.3 |
| Bluetooth Range | Up to 10 meters (393.7-590.6 inches) |
| Loudspeaker | 13MM Film Loudspeaker |
| Battery Type | Polymer Lithium Battery |
| Battery Capacity | 50mAh (built-in) |
| Charging Time | Approximately 1 hour |
| Working Time | Approximately 7 hours |
| Standby Time | Approximately 800 hours |
| Water Resistance | IPX4 |
| Material | ABS (Acrylonitrile Butadiene Styrene) |
| Control Method | Push Button (One Key Control) |
| Earpiece Shape | Clip-on |
8. Warranty and Support
8.1 Manufacturer's Warranty
The LICAEVEY GD28 headphone comes with a manufacturer warranty for 90 days from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For further assistance, technical support, or warranty inquiries, please contact LICAEVEY customer service through the retailer where you purchased the product or visit the official LICAEVEY website for contact information.