JOMILIN B9
JOMILIN B9 Wireless Headphones Instruction Manual
Model: B9
Brand: JOMILIN
1. Product Overview
The JOMILIN B9 Wireless Headphones are designed for superior audio experience and comfort. Key features include:
- Up to 60 Hours Playtime: Enjoy extended listening sessions on a single charge. A quick 10-minute charge provides up to 4 hours of playtime.
- Hi-fi Stereo Sound: Equipped with 40mm audio drivers and an advanced Bluetooth 5.3 chip, delivering exceptionally clear sound with full dynamic range, rich bass, and crisp mids.
- Strong Bluetooth 5.3 Technology: Ensures a stable and fast wireless connection, compatible with all Bluetooth-enabled devices. Can be paired with two devices simultaneously, allowing seamless switching.
- Ultra-soft Ear Cushions and Padded Headband: Designed for fatigue-free listening, even during long sessions. The adjustable slider ensures a perfect fit.
- Wired Mode Option: For non-Bluetooth devices or extended listening, connect via the included 3.5mm audio cable.
- Built-in Microphone: For clear hands-free calls and voice assistant interaction.
2. Package Contents
Please check the box for the following items:
- JOMILIN B9 Wireless Headphones
- USB Type-C Charging Cable
- 3.5mm Audio Cable
- Carrying Pouch
- User Manual
3. Product Diagram and Controls
Familiarize yourself with the headphone's layout and controls:

Image: Detailed view of the JOMILIN B9 headphone controls.
- Power On/Off Button: Located on the right earcup, used to power the headphones on or off.
- Play/Pause/Answer/Hang Up/Reject Call/Voice Assistant Button: Multi-function button for media playback and call management.
- Next Track/Volume Up Button: Press briefly for next track, press and hold to increase volume.
- Previous Track/Volume Down Button: Press briefly for previous track, press and hold to decrease volume.
- Type-C Charging Port: For connecting the USB Type-C charging cable.
- 3.5mm Aux Plug-In Port: For wired audio connection.
4. Setup Instructions
4.1. Bluetooth Pairing
To pair your JOMILIN B9 headphones with a Bluetooth-enabled device:
- Ensure the headphones are fully charged.
- Press and hold the Power On/Off button for 3-5 seconds until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, PC), go to Bluetooth settings and turn Bluetooth on.
- Search for available devices. Select "JOMILIN B9" from the list.
- Once connected, the LED indicator will turn solid blue or flash blue slowly. You will hear an audible confirmation.
The headphones can connect to two devices simultaneously. After pairing the first device, disable its Bluetooth, pair the second device, then re-enable Bluetooth on the first device. The headphones will automatically connect to both.

Image: JOMILIN B9 headphones in use with various devices, highlighting wireless freedom.
4.2. Wired Connection
To use the headphones in wired mode:
- Plug one end of the 3.5mm audio cable into the Aux port on the headphones.
- Plug the other end of the 3.5mm audio cable into the audio output jack of your device.
- The headphones will automatically switch to wired mode.

Image: JOMILIN B9 headphones connected via wired mode, offering versatile usage.
5. Operating Instructions
5.1. Basic Controls
- Power On: Press and hold the Power On/Off button for 3 seconds.
- Power Off: Press and hold the Power On/Off button for 5 seconds.
- Play/Pause: Press the Play/Pause button once.
- Volume Up: Press and hold the "+" button.
- Volume Down: Press and hold the "-" button.
- Next Track: Press the "+" button once.
- Previous Track: Press the "-" button once.
- Answer/End Call: Press the Play/Pause button once during an incoming call.
- Reject Call: Press and hold the Play/Pause button for 2 seconds during an incoming call.
- Activate Voice Assistant: Double-press the Play/Pause button.
5.2. Charging
To charge your JOMILIN B9 headphones:
- Connect the USB Type-C charging cable to the charging port on the headphones.
- Connect the other end of the cable to a USB power source (e.g., computer USB port, wall adapter).
- The LED indicator will glow red during charging and turn off when fully charged.
- A full charge takes approximately 2 hours, providing up to 60 hours of playtime.
6. Maintenance
To ensure the longevity and optimal performance of your headphones:
- Clean the ear cushions and headband regularly with a soft, dry cloth.
- Avoid exposing the headphones to extreme temperatures, humidity, or direct sunlight.
- Store the headphones in the provided carrying pouch when not in use to protect them from dust and scratches. The foldable design makes storage convenient.
- Do not attempt to disassemble or repair the headphones yourself, as this may void the warranty.
7. Troubleshooting
If you encounter issues with your JOMILIN B9 headphones, try the following solutions:
- Headphones not turning on: Ensure the headphones are fully charged.
- Cannot pair with device:
- Ensure the headphones are in pairing mode (flashing blue/red LED).
- Make sure Bluetooth is enabled on your device.
- Move the headphones closer to your device.
- Clear the Bluetooth device list on your device and try pairing again.
- No sound or low volume:
- Adjust the volume on both the headphones and your connected device.
- Ensure the headphones are properly paired.
- If using wired mode, ensure the 3.5mm audio cable is fully inserted into both the headphones and the device.
- Sound distortion:
- Move closer to your device to avoid interference.
- Try playing audio from a different source.
If the issue persists, please contact JOMILIN customer support for further assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | B9 |
| Brand | JOMILIN |
| Connectivity Technology | Wireless, Bluetooth 5.3, Wired |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Audio Driver Size | 40 Millimeters |
| Battery Life | 60 Hours |
| Charging Time | 2 Hours |
| Item Weight | 7.01 Ounces |
| Product Dimensions | 6.8 x 3.15 x 7.48 inches |
| Material | Plastic |
| Ear Placement | Over Ear |
| Control Type | Volume Control |
9. Visual Guide
9.1. Product Overview

Image: The JOMILIN B9 Wireless Headphones, showcasing their sleek design.

Image: Detailed design features of the headphones, emphasizing comfort and portability.

Image: Internal components and audio technology, highlighting sound quality and Bluetooth features.
9.2. Battery Life and Charging

Image: Visual representation of the extended battery life and fast charging capabilities.
9.3. Usage Scenarios

Image: Examples of how the JOMILIN B9 headphones can be used in various daily activities.
9.4. Official Product Video
Video: An official product video showcasing the JOMILIN B9 Wireless Bluetooth Headphones and their features.
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