Introduction
Thank you for choosing the Voistek Bone Conduction Headphones. These open-ear wireless headphones are designed for active lifestyles, featuring a 32GB MP3 player, IP68 waterproof rating, and a secure fit for various activities including swimming, running, and cycling. This manual provides detailed instructions to help you get the most out of your device.
What's in the Box
- Bone conduction headphones
- Adjustable elastic strap
- Magnetic charging cable
- User Manual
Product Features
- Adjustable Titanium Frame: The flexible titanium frame adapts to different head sizes and stays secure during intense movement. Soft skin-contact pads help prevent slipping, making these headphones comfortable for running, cycling, yoga, and long training sessions.
- Open-Ear Design: These open-ear bone conduction headphones keep your ears completely open, allowing you to hear traffic, teammates, and surroundings while listening to music. Ideal for city running, road cycling, and outdoor workouts where situational awareness matters.
- True IP68 Waterproof: Designed for aquatic use, these IP68 waterproof bone conduction headphones can be submerged up to 6 feet for 2 hours. Perfect for lap swimming, pool training, and water-based workouts without worrying about sweat or rain.
- Bluetooth + 32GB MP3 Player: Switch freely between Bluetooth mode and the built-in 32GB MP3 player. Store up to 8,000 songs and enjoy music without a phone—ideal for swimming, gym training, or outdoor activities with limited signal.
- 8-Hour Battery + Fast Charging: Enjoy up to 8 hours of continuous playback on a single charge. A quick 15-minute charge provides up to 2 hours of use, perfect for last-minute workouts and daily training routines.
- Hands-Free Calls & Voice Assistant: Built-in microphones reduce wind and background noise during calls. Use voice assistant commands to control music, answer calls, or get directions while running or cycling, without stopping your activity.

Setup
Charging the Headphones
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 power source. A full charge takes approximately 1.5 hours and provides up to 8 hours of playback.

Powering On/Off
- To Power On: Press and hold the power button for 3 seconds until the LED indicator lights up.
- To Power Off: Press and hold the power button for 3 seconds until the LED indicator turns off.
Bluetooth Pairing
With the headphones powered on, they will automatically enter pairing mode (LED will flash). On your device (smartphone, tablet, etc.), enable Bluetooth and select "BC3ps" from the list of available devices. Once connected, the LED indicator will stop flashing. The headphones support Bluetooth 5.3 and have a range of up to 15 meters.
Operating Instructions
Button Controls
- Power On/Off: Press and hold for 3 seconds.
- Volume Up: Press '+' button.
- Volume Down: Press '-' button.
- Next Song: Press and hold '+' button.
- Previous Song: Press and hold '-' button.
- Play/Pause: Tap the power button once.
- Answer/Hang Up Call: Tap the power button once.
- Reject Call: Press and hold the power button.
- Voice Assistant: Press and hold the power button for 2 seconds.
- MP3/Bluetooth Mode Switch: Double tap the power button.
- Night Light On/Off: Triple tap the power button.
- Factory Data Reset: Tap the power button five times.

Switching Modes (Bluetooth/MP3)
The headphones feature both Bluetooth connectivity and a built-in 32GB MP3 player. Double-tap the power button to switch between these modes. For underwater use, always switch to MP3 mode as Bluetooth signals do not transmit effectively through water.

Night Light Function
For increased safety during night activities, triple-tap the power button to activate the luminous night light. Triple-tap again to cycle through light modes or turn it off.

Usage Scenarios
Outdoor Sports and Situational Awareness
The open-ear design ensures you remain aware of your surroundings, making these headphones ideal for running, cycling, and hiking. You can enjoy your audio while still hearing traffic, other people, and environmental sounds, enhancing safety.

Swimming and Water Sports
With an IP68 waterproof rating, these headphones are suitable for swimming and other water-based activities. Remember to switch to MP3 mode before entering the water, as Bluetooth connectivity is limited underwater.

Maintenance
Cleaning and Care
- After using in water, rinse the headphones with fresh water and dry thoroughly with a soft cloth.
- Avoid using harsh chemicals or abrasive materials for cleaning.
- Store in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
Common Issues
- No Power: Ensure the headphones are fully charged.
- Cannot Pair: Make sure Bluetooth is enabled on your device and the headphones are in pairing mode. Try restarting both devices.
- No Sound: Check the volume levels on both the headphones and your connected device. Ensure the headphones are correctly paired or in the correct mode (Bluetooth/MP3).
- Poor Sound Quality: Ensure the headphones are positioned correctly on your cheekbones. For swimming, ensure earplugs are used to enhance sound clarity.
Specifications
| Model Name | BC3ps |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Wireless Communication Technology | Bluetooth |
| Water Resistance Level | IP68 Waterproof |
| Internal Storage | 32GB (MP3 Player) |
| Battery Life | Up to 8 Hours |
| Charging Time | 1.5 Hours |
| Audio Driver Type | Bone Conduction Driver |
| Earpiece Shape | Open-Ear |
| Material | Acrylonitrile Butadiene Styrene (ABS), Rubber, Titanium |
| Special Features | Adjustable, IP68 Waterproof, Lightweight, Swimming-first Bone Conduction Headphones |
Warranty and Support
Warranty Information
Please refer to the warranty card included in your product packaging for detailed warranty terms and conditions. Keep your proof of purchase for any warranty claims.
Customer Support
For further assistance, troubleshooting, or product inquiries, please visit the official Voistek store on Amazon or contact our customer support team through the contact information provided in your user manual.