1. Introduction
The HIFI WALKER T10 Air Bone Conduction Headphones are designed for active lifestyles, offering open-ear listening for both land and water activities. Featuring bone conduction technology, these headphones allow you to enjoy audio while remaining aware of your surroundings. They include both Bluetooth and a built-in MP3 player with 32GB of storage, making them suitable for swimming, running, cycling, and general fitness. The IPX8 waterproof rating ensures durability in various environments.
2. What's in the Box
- 1x HIFI WALKER T10 Air Bone Conduction Headphones
- 1x Adjustable Strap
- 1x Charging Cable
- 2x Swimming Eartips
- 1x User Manual
3. Setup
3.1 Initial Charging
Before first use, fully charge your headphones. Connect the magnetic charging cable to the charging port on the headphones and plug the USB end into a compatible USB power adapter (not included) or computer USB port. The LED indicator will show charging status and turn solid when fully charged.
3.2 Wearing the Headphones
Place the headphones with the transducers resting on your cheekbones, just in front of your ears. The band should wrap around the back of your head. Adjust for a comfortable and secure fit. The lightweight design and flexible fit ensure stability during various activities.

Image: Proper wearing of the headphones, highlighting the secure fit features.

Image: Demonstrating the lightweight and open-ear design for comfortable wear.
4. Operating Instructions
4.1 Power On/Off
- Power On: Press and hold the Power button for 3 seconds until the LED indicator flashes.
- Power Off: Press and hold the Power button for 5 seconds until the LED indicator turns off.
4.2 Operating Modes: Bluetooth and MP3
The T10 Air headphones support two distinct modes: Bluetooth for wireless streaming on land and MP3 for offline music playback, especially useful for swimming where Bluetooth signals are unreliable underwater.

Image: Illustration of the two operating modes: MP3 for underwater and Bluetooth for land activities.
4.2.1 Bluetooth Mode (for land use)
- Pairing: When powered on for the first time, the headphones will automatically enter pairing mode. The LED will flash blue and red. On your device (smartphone, tablet, etc.), search for 'HIFI WALKER T10 Air' in the Bluetooth settings and select it to connect.
- Reconnection: Once paired, the headphones will automatically reconnect to the last connected device when powered on and within range.
4.2.2 MP3 Mode (for swimming and offline listening)
- Switching Modes: Press the Mode button (often combined with the Power button or a dedicated button) to switch between Bluetooth and MP3 modes. The LED indicator will change to confirm the mode.
- Transferring Music: Connect the headphones to your computer using the magnetic charging cable. The headphones will appear as a removable disk. Drag and drop your audio files (MP3, WAV, FLAC, APE) into the headphone's storage folder.

Image: Highlighting the 32GB internal storage for phone-free music playback, ideal for swimming.
4.3 Controls
The headphones feature physical buttons for easy control of playback and volume.
- Power On/Off / Play/Pause: Press the Power button once to play or pause music.
- Volume Up / Next Track: Press the '+' button once to increase volume. Press and hold the '+' button to skip to the next track.
- Volume Down / Previous Track: Press the '-' button once to decrease volume. Press and hold the '-' button to go to the previous track.

Image: Illustrating the open-ear design for situational awareness during outdoor activities like cycling.

Image: Detailed view of the easy-to-use physical buttons and magnetic charging interface.
5. Maintenance
5.1 Cleaning
Wipe the headphones with a soft, damp cloth after each use, especially after exposure to sweat, chlorine, or saltwater. Ensure the charging contacts are clean and dry before charging.
5.2 Water Resistance Care
The headphones are IPX8 waterproof, suitable for full immersion. However, to maintain water resistance, avoid exposing the charging port to water when not in use. Always ensure the headphones are completely dry before charging.

Image: The headphones submerged in water, demonstrating their IPX8 waterproof capability.
5.3 Storage
Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures. Avoid placing heavy objects on them.
6. Troubleshooting
- No Power: Ensure the headphones are fully charged.
- Cannot Pair Bluetooth: Ensure the headphones are in Bluetooth mode and within range of your device. Turn off and on Bluetooth on your device, then try pairing again.
- No Sound in MP3 Mode: Ensure music files are correctly transferred to the internal storage and are in a supported format. Check volume levels.
- Poor Sound Quality Underwater: Ensure swimming eartips are properly inserted to optimize sound transmission underwater.
- Charging Issues: Clean the magnetic charging contacts on both the cable and headphones. Ensure the cable is securely connected.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | HIFI WALKER |
| Model Name | T10 Air |
| Ear Placement | Open Ear (Bone Conduction) |
| Connectivity Technology | Bluetooth, Built-in MP3 |
| Internal Storage | 32 GB |
| Water Resistance Level | IPX8 (Waterproof) |
| Battery Life | Up to 8 hours |
| Charging Interface | Magnetic USB |
| Item Weight | 32 g |
| Enclosure Material | Memory Titanium |
| Compatible Devices | Smartphones, Laptops, Desktops, Tablets, Smart Speakers, Televisions, Car Audio Systems, Cellphones |
8. Warranty Information
HIFI WALKER products are covered by a limited warranty against manufacturing defects. Please refer to the warranty card included in your product packaging or visit the official HIFI WALKER website for detailed warranty terms and conditions. Keep your purchase receipt as proof of purchase for warranty claims.
9. Support
For further assistance, technical support, or customer service inquiries, please visit the official HIFI WALKER website or contact our customer support team using the contact information provided on our website. Our team is available to help with any questions or issues you may encounter.