Introduction
Thank you for choosing the BY01 OWS Wireless Bluetooth Earphones. These earphones are designed to provide a high-quality audio experience with advanced features like HIFI sound, smart HD calls, and a comfortable, secure fit. This manual will guide you through the setup, operation, and maintenance of your new earphones.
Package Contents
- BY01 OWS Wireless Earphones (Left and Right)
- Charging Case
- Charging Cable (Type-C)
- User Manual
Setup
1. Charging the Earphones and Case
- Place the earphones into the charging case. Ensure they are correctly seated.
- Connect the provided Type-C charging cable to the charging port on the case and to a USB power source.
- The indicator lights on the charging case will show the charging status. A full charge for the earphones typically takes 1-2 hours, and the charging box takes approximately 1.5 hours.
Description: The charging case features a Type-C port for convenient charging. The earphones charge automatically when placed inside the case.

Image: Charging case with Type-C port, highlighting its stylish and lightweight design.
2. Wearing the Earphones
- Identify the left (L) and right (R) earphones.
- Gently place each earphone into your ear, adjusting the soft rubber ear hooks to fit securely behind your ear.
- The ergonomic semi in-ear design and silicone ear caps ensure a comfortable and stable fit, even during physical activity.
Description: The earphones are designed for a snug and comfortable fit, preventing them from falling off during use.

Image: A woman demonstrating the ergonomic and secure fit of the earbud.

Image: Close-up of the earbuds highlighting the soft rubber ear hooks for comfort and stability.
3. Pairing with a Bluetooth Device
- Ensure the earphones are charged and removed from the charging case. They will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "BY01 OWS" (or similar name) from the list of devices.
- Once connected, you will hear a confirmation tone, and the earphones will be ready for use.
Description: The earphones utilize Bluetooth 5.3/5.4 for a stable and fast connection, ensuring better interference immunity.

Image: Visual representation of Bluetooth 5.3 technology for a stable and faster connection.
Operating Instructions
1. Power On/Off
- Power On: Remove the earphones from the charging case. They will power on automatically.
- Power Off: Place the earphones back into the charging case. They will power off automatically and begin charging.
2. Music Playback
- Play/Pause: Press the control button on either earphone once.
- Next Track: Double-press the control button on the right earphone.
- Previous Track: Double-press the control button on the left earphone.
- Volume Control: The earphones support volume control via the control buttons. Refer to your device's manual for specific gestures if needed.
3. Call Management
- Answer/End Call: Press the control button on either earphone once.
- Reject Call: Press and hold the control button on either earphone for 2 seconds.
- The integrated microphone ensures clear HD calls.
4. Dual Headphones + Audio Mode
The charging case can also function as a portable speaker, allowing you to switch between using the earphones and playing audio directly from the case. This provides a versatile 2-in-1 audio experience.

Image: Illustration of the earphones and charging case, demonstrating the dual audio functionality where the case acts as a speaker.
Maintenance
1. Cleaning
- Regularly clean the earphones and charging case with a soft, dry, lint-free cloth.
- Avoid using harsh chemicals or abrasive materials.
- Ensure charging contacts on both earphones and case are clean and dry for optimal charging.
2. Storage
- When not in use, store the earphones in their charging case to protect them and keep them charged.
- Store in a cool, dry place away from extreme temperatures.
3. Battery Care
- To prolong battery life, avoid fully discharging the earphones and charging case frequently.
- Charge the device regularly, even if not in frequent use, to maintain battery health.
Description: The earphones and charging case offer ultra-long battery life, with up to 36 hours of playback with the charging case.

Image: Visual highlighting the powerful battery life for extended music playback.
Troubleshooting
- Earphones not pairing: Ensure both earphones are out of the case and have sufficient charge. Turn off and on your device's Bluetooth, then try pairing again.
- Only one earphone working: Place both earphones back into the charging case, then take them out simultaneously to re-establish the stereo connection.
- No sound: Check the volume level on both your device and the earphones. Ensure the earphones are correctly connected to your device.
- Charging issues: Verify the charging cable and adapter are working. Clean the charging contacts on the earphones and inside the case.
- Not an AI translator: Please note that these earphones do not feature AI translation capabilities. They are designed for high-quality audio playback and communication.
Specifications
| Feature | Specification |
|---|---|
| Product Model | BY01 OWS (JM13/JM13Pro) |
| Material | ABS, Plastic |
| Bluetooth Version | 5.3 (some variants may feature 5.4) |
| Communication Distance | ≥10 meters |
| Headset Capacity | 40mAh |
| Charging Compartment Capacity | 300mAh (Total battery capacity 600mAh) |
| Headset Charging Time | 0.8 hours |
| Charging Box Charging Time | 1.5 hours |
| Music Playback Time | 5-6 hours (earbuds), up to 36 hours with charging case |
| Call Time | 4 hours |
| Standby Time | Up to 60 days (with charging case) |
| Driver Diameter | 16mm composite diaphragm moving coil |
| Impedance Range | Up to 32 Ω |
| Total Harmonic Distortion | 1% |
| Waterproof Rating | IPX5 (Dust and Water Resistant) |
| Features | Active Noise-Cancellation, Sound Isolating, With Microphone, Control Button, Volume Control |
| Connectors | Type-C |
| Certification | CE, FCC, RoHS |
Description: Detailed product parameters including battery life, Bluetooth version, and physical dimensions.

Image: Table showing product parameters and a diagram illustrating earbud dimensions.
User Tips
- For the best sound quality, ensure the earphones are properly seated in your ears. Experiment with the fit to find what is most comfortable and provides the best seal.
- To maximize battery life, always place the earphones back into the charging case when not in use.
- The IPX5 rating means the earphones are resistant to splashes and sweat, making them suitable for workouts and light rain. However, they are not designed for submersion in water.
- If experiencing connection issues, try resetting the earphones by placing them in the case, forgetting the device on your phone's Bluetooth settings, and then re-pairing.
Warranty and Support
For any questions, technical support, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.





