1. Introduction
Thank you for choosing the DEMICEA LibreFit B19 Open Ear Earbuds. These true wireless headphones are designed to provide a comfortable listening experience while keeping you aware of your surroundings. This manual provides essential information for setting up, operating, and maintaining your earbuds.
Image 1.1: DEMICEA LibreFit B19 Open Ear Earbuds and Charging Case.
2. What's in the Box
- LibreFit B19 Earphones (x2)
- Charging Case (x1)
- USB to Type-C Charging Cable (x1)
- User Guide (x1)
Image 2.1: The product package includes the LibreFit B19 earphones, charging case, USB-C charging cable, and user manual.
3. Product Overview
The LibreFit B19 earbuds feature a lightweight design with earhooks for secure and comfortable wear. They utilize air conduction technology, allowing you to hear your audio while remaining aware of your surroundings.
Key Features:
- Comfortable Fit: Weighing 0.26 ounces per earbud, with a 0.77mm titanium alloy frame and silicone shell.
- High-Quality Audio: Equipped with 15mm oval acoustic units, AeroDirect directional sound field technology, and AeroBoost digital sound enhancement for clear vocals and immersive sound.
- Clear Calls: Dual MEMS microphones and ClearTalk Tech smart noise-canceling reduce ambient noise for transparent communication.
- Water Resistance: IPX5 rated, featuring hydrophobic material on grilles and a dual-layer nanotech finish for sweat and rain resistance.
- Long Battery Life: Up to 10 hours on a single charge, extended to 30 hours with the charging case.
- Bluetooth 5.3: Provides stable, low-latency (<60ms) connection up to 10 meters.
Image 3.1: Overview of key features of the LibreFit B19 earbuds.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case. Connect the provided USB to Type-C charging cable to the charging port on the case and a power source. The case takes approximately 2 hours to fully charge.
Image 4.1: The charging case connected via USB-C cable, indicating charging status.
4.2 Pairing with Your Device
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for "LibreFit B19" in the list of available Bluetooth devices and select it to connect.
- Once connected, the earbuds are ready for use.
Note: This product uses Bluetooth version 5.3 and supports only the A2DP and HFP protocols. If your device's Bluetooth version or protocol does not match, it may not be recognized.
Image 4.2: Bluetooth pairing process shown on a smartphone.
5. How to Wear
The LibreFit B19 earbuds are designed with earhooks for a secure and comfortable fit. Place the earbud over your ear, ensuring the speaker rests just outside your ear canal. Adjust for optimal comfort and sound.
Image 5.1: Visual guide for wearing the LibreFit B19 earbuds.
Image 5.2: Man wearing the earbuds, highlighting genuine open-ear comfort.
6. Operating Instructions
The LibreFit B19 earbuds feature intuitive touch controls for managing your audio and calls.
6.1 Touch Controls
| Function | Action |
|---|---|
| Play/Pause | Double click on the L/R button |
| Previous Track | Triple click on the L button |
| Next Track | Triple click on the R button |
Note: To avoid accidental presses, this model of ear-hanging headphones does not have a volume control function. You need to adjust the volume on your phone.
Image 6.1: Touch control functions.
6.2 Call Functions
Equipped with dual MEMS microphones and ClearTalk Tech smart noise-canceling technology, these earbuds provide clear and transparent communication during calls.
7. Audio Features
Experience rich and immersive audio with the LibreFit B19 earbuds.
7.1 High-Quality Sound
The 15mm oval acoustic units ensure good amplitude and sensitivity, providing a rich audio experience. AeroDirect directional sound field technology prevents sound leakage, while AeroBoost digital sound enhancement makes vocals more lifelike.
Image 7.1: Enhanced Dynamic Driver for high-quality audio.
Image 7.2: Detailed sound experience.
8. Battery Life
The LibreFit B19 earbuds offer extended listening times to keep your music going throughout the day.
- Single Charge: Up to 10 hours of music playback.
- With Charging Case: Up to 30 hours of total playback.
- Charging Time: Approximately 2 hours for a full charge.
- Quick Charge: A 5-minute quick charge provides approximately 50 minutes of music time.
9. Water Resistance
The LibreFit B19 earbuds are built to withstand your active lifestyle.
- IPX5 Rating: Provides comprehensive waterproofing against sweat and rain.
- Hydrophobic Material: Microphone and speaker grilles are treated to enhance water resistance.
- Nanotech Finish: The entire body is coated with a dual-layer nanotech finish for added protection.
Image 9.1: Multi-scenario waterproofing for active use.
10. Maintenance
To ensure the longevity and optimal performance of your DEMICEA LibreFit B19 earbuds, follow these maintenance guidelines:
- Cleaning: Regularly wipe the earbuds and charging case with a soft, dry cloth. Avoid using abrasive materials or harsh chemicals.
- Storage: Store the earbuds in their charging case when not in use to protect them from dust, moisture, and physical damage.
- Charging: Use only the provided USB to Type-C charging cable. Avoid exposing the charging port to liquids.
- Avoid Extreme Conditions: Do not expose the earbuds to extreme temperatures (hot or cold), direct sunlight for prolonged periods, or high humidity.
- Water Exposure: While IPX5 rated for sweat and rain, avoid submerging the earbuds in water. Dry them thoroughly if they get wet before placing them back in the charging case.
11. Troubleshooting
If you encounter any issues with your LibreFit B19 earbuds, please refer to the following common solutions:
- Earbuds not pairing: Ensure both earbuds are in the charging case, then open the lid to activate pairing mode. Check your device's Bluetooth settings and try reconnecting.
- No sound: Verify that the earbuds are connected to your device and the volume is turned up on both the earbuds (via touch control) and your device.
- Poor sound quality: Ensure the earbuds are positioned correctly over your ear canal. Check for any obstructions or debris on the speaker grilles.
- Charging issues: Confirm the charging cable is securely connected to both the case and the power source. Ensure the charging pins on the earbuds and in the case are clean and free of debris.
- Earbuds falling off: Adjust the earhooks to ensure a snug fit around your ears. The ear-hanging design may vary in fit for different ear shapes.
If the issue persists, please contact DEMICEA customer support.
12. Specifications
| Feature | Specification |
|---|---|
| Model Name | LibreFit B19 |
| Connectivity Technology | Wireless, Bluetooth, Air conduction |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Audio Driver Size | 15mm oval acoustic units |
| Battery Life (Earbuds) | Up to 10 Hours |
| Battery Life (with Case) | Up to 30 Hours |
| Charging Time | 2 Hours (full charge) |
| Water Resistance Level | IPX5 |
| Control Type | Touch Control |
| Earbud Weight (single) | 0.26 ounces |
| Product Dimensions | 3.54 x 2.76 x 0.79 inches |
| Material | Metal, Plastic, Silicone |
| UPC | 768510591455, 768510591486 |
13. Warranty and Support
DEMICEA stands behind the quality of its products. The LibreFit B19 earbuds come with a 2-year warranty, ensuring peace of mind for your purchase.
For any questions, troubleshooting assistance, or warranty claims, please visit the official DEMICEA website or refer to the After-sales Support Card included in your product packaging.
Official Website: www.demicea.com
14. Environmental Information
DEMICEA is committed to promoting the balance between technological development and environmental protection. The LibreFit B19 earbuds are designed with sustainability in mind:
- Recyclable Materials: Uses recyclable materials, such as silicone.
- Clean Energy: Production process utilizes sustainable energy sources like hydropower and wind power.
- Low-Power Mode: Significant reduction in energy consumption when not in use.
- Responsible Packaging: Over 70% of the packaging is recyclable.
Image 14.1: DEMICEA's commitment to environmental sustainability.
15. Official Product Video
Video 15.1: Official product overview of the Demicea Librefit B19 Open Ear Headphones by DEMICEA OFFICIAL. This video showcases the design and key features of the earbuds.
