DEMICEA B8
DEMICEA LibreFit B8 User Manual
True Wireless Bone Conduction Earphones
Product Overview
The DEMICEA LibreFit B8 earphones are designed for users who prioritize comfort, situational awareness, and high-quality audio during activities like cycling, yoga, and workouts. Utilizing genuine bone conduction technology, these open-ear headphones deliver sound through your cheekbones, leaving your ear canals open to ambient sounds. They feature advanced Bluetooth 5.3 connectivity, extended battery life, and robust IP68 waterproofing.

The LibreFit B8 earphones and their compact charging case.
What's in the Box
- LibreFit B8 earphones (2 units)
- Charging Case (1 unit)
- USB to Type C Charging Cable (1 unit)
- User Manual (1 unit)
Setup
Charging the Earphones and Case
Before first use, fully charge the earphones and charging case. A full charge takes approximately 1.5 hours for the earphones and 2 hours for the case.
- Connect the provided USB to Type C charging cable to the charging port on the case.
- Plug the USB-A end into a compatible power adapter (not included) or a computer's USB port.
- The indicator light on the case will show charging status.
- A 5-minute quick charge provides 1 hour of music playback.
The LibreFit B8 offers up to 15 hours of playtime on a single charge and 60 hours with the charging case.
Pairing with Your Device
- Take the earphones out of the charging case. They will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), go to Bluetooth settings.
- Find "B8" in the list of available devices and click to connect.
- Once connected, a voice prompt will confirm successful pairing.
Simple two-step process for Bluetooth pairing.
Wearing Instructions
The LibreFit B8 earphones feature an open-ear design with earhooks for a secure and comfortable fit.
- Identify the left (L) and right (R) earphones.
- Place the earhook over the top of your ear.
- Position the main body of the earphone so that the bone conduction driver rests comfortably on your cheekbone, just in front of your ear canal.
- Adjust for optimal comfort and sound delivery.
Proper wearing ensures comfort and optimal sound.
Operating Controls
The LibreFit B8 earphones feature intuitive button controls on each earbud.
| Function | Action | Earbud |
|---|---|---|
| Play/Pause Music | Single click | L or R |
| Volume Down | Double click | L |
| Volume Up | Double click | R |
| Previous Track | Triple click | L |
| Next Track | Triple click | R |
| Answer/End Call | Single click | L or R |
| Reject Call | Double click | L or R |
| Switch to Phone Speaker | Long press (2s) | L or R |
Detailed control scheme for music and calls.
Key Features
Genuine Bone Conduction Technology
The LibreFit B8 utilizes an 11mm acoustic driver in a true bone conduction design, delivering powerful and authentic audio. SonicDirect Tech minimizes sound leakage, ensuring privacy, while ToneTerra acoustic cavity and SonicBoost digital sound enhancement optimize HI-FI sound for a realistic auditory experience.
Internal components of the bone conduction driver.
Lightweight and Comfortable Design
Each earbud weighs just 0.28 ounces, crafted with a 0.7mm memory-flex titanium alloy frame and skin-friendly silicone. This ensures a delicate appearance, robust durability, and seamless all-day wear without discomfort.
Experience open-ear comfort, allowing you to listen to music while remaining aware of your surroundings.
Extended Battery Life
Enjoy up to 15 hours of continuous music playback on a single charge. With the portable charging case, the total listening time extends to an impressive 60 hours, ensuring your music is always available.
IP68 Waterproofing
Boasting an IP68 waterproof rating and an additional hydrophobic coating, these earphones are designed to handle sweat, rain, and even direct cleaning, ensuring reliable and long-lasting performance in various conditions.
IP68 rating protects against sweat and water, ensuring durability.
Advanced Bluetooth 5.3 Connectivity
Equipped with state-of-the-art Bluetooth 5.3, the LibreFit B8 offers a lightning-fast 48Mbit/s transfer rate, an impressive 300m range, and minimal 60ms latency for seamless music synchronization. It supports AAC/SBC audio for superior sound quality.
Bluetooth 5.3 ensures strong anti-interference, lower power consumption, and minimal signal delay.
Maintenance
- Cleaning: Due to the hydrophobic coating, the earphones can be directly cleaned with water. Use a soft, damp cloth to wipe down the earphones and charging case regularly. Avoid harsh chemicals.
- Storage: Store the earphones in their charging case when not in use to protect them and keep them charged.
- Battery Care: To prolong battery life, avoid fully discharging the earphones and case frequently. Charge them regularly, even if not in daily use.
Troubleshooting
If you encounter any issues with your LibreFit B8 earphones, please refer to the following common solutions:
- No Sound/Pairing Issues:
- Ensure both earphones are fully charged.
- Turn off Bluetooth on your device and turn it back on.
- Forget/delete "B8" from your device's Bluetooth list and attempt to re-pair.
- Ensure the earphones are within the 10-meter Bluetooth range of your device.
- Low Volume/Poor Sound Quality:
- Adjust the volume on both your earphones and your connected device.
- Ensure the bone conduction drivers are positioned correctly on your cheekbones.
- Clean the earphones to remove any debris that might affect sound transmission.
- Ear Discomfort:
- Adjust the position of the earhooks and drivers to find the most comfortable fit.
- Take breaks from wearing the earphones during extended use.
Official product video demonstrating the bone conduction headphones.
Specifications
| Feature | Detail |
|---|---|
| Model Name | LibreFit B8 |
| Connectivity Technology | Bluetooth, Bone Conduction |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Audio Driver Type | Bone Conduction Driver |
| Audio Driver Size | 11 Millimeters |
| Battery Life (Earphones) | 15 Hours (single charge) |
| Battery Life (with Case) | 60 Hours |
| Charging Time (Earphones) | 1.5 Hours |
| Charging Time (Case) | 2 Hours |
| Water Resistance Level | IP68 Waterproof |
| Item Weight (each earbud) | 0.28 ounces (approx. 8 grams) |
| Material | Silicone, Metal |
| Control Type | Button Control |
| Ear Placement | Open Ear |
Warranty and Support
Your DEMICEA LibreFit B8 earphones come with a standard warranty. For specific details regarding warranty coverage and duration, please refer to the official user manual included in your product packaging or visit the manufacturer's website.
For any product-related inquiries, technical support, or warranty claims, please contact DEMICEA support:
- Official Website: www.demicea.com
- Support Email: support@demicea.com
Additional protection plans may be available for purchase through authorized retailers.