1. Introduction
Thank you for choosing the Earbay BT786-L Wireless Headset. This manual provides detailed instructions to help you set up, operate, and maintain your headset for optimal performance. Please read this manual thoroughly before use.
2. Package Contents
Verify that all items are present in your package:
- Earbay BT786-L Wireless Headset x1
- USB Dongle x1
- USB Charging Cable x1
- User Manual x1

Image: The Earbay BT786-L Wireless Headset, USB dongle, and charging cable neatly arranged in its packaging, alongside the user manual.
3. Product Overview
Familiarize yourself with the components and controls of your headset.
3.1 Headset Components
- Adjustable Headband: For a comfortable fit.
- Soft Leatherette Ear Pads: Designed for extended wear.
- Flexible Microphone Boom: Adjustable for optimal voice pickup.
- Microphone Mute Button: Located on the microphone boom for quick access.
- Volume Control: Integrated on the earcup.
- Power/Multi-function Button: For power on/off, pairing, and call management.
- Charging Port: USB port for charging.

Image: A detailed view of the Earbay BT786-L Wireless Headset, highlighting its adjustable microphone and on-ear design.
3.2 Controls and Indicators
The headset features intuitive controls for ease of use:
- Power On/Off: Press and hold the Multi-function button.
- Volume Up/Down: Use the dedicated volume controls on the earcup.
- Mute/Unmute Microphone: Press the mute button on the microphone boom.
- Answer/End Call: Press the Multi-function button.
- Play/Pause Music: Press the Multi-function button.

Image: A close-up of the headset's earcup and microphone, illustrating the location of the mute button and other controls.
4. Setup
4.1 Charging the Headset
Before first use, fully charge your headset.
- Connect the USB charging cable to the headset's charging port.
- Connect the other end of the cable to a USB power source (e.g., computer USB port, USB wall adapter).
- The LED indicator will show charging status. A full charge typically takes approximately 2 hours.
- Once fully charged, the LED indicator will change (refer to specifications for exact behavior).

Image: The Earbay BT786-L headset placed on its charging stand, connected via a USB cable.
4.2 Pairing with a Device (Bluetooth 5.0)
Your headset can connect to devices via Bluetooth or the included USB dongle.
4.2.1 Bluetooth Pairing
- Ensure the headset is powered off.
- Press and hold the Multi-function button until the LED indicator flashes blue and red alternately, indicating pairing mode.
- On your device (smartphone, tablet, PC), enable Bluetooth and search for available devices.
- Select "Earbay BT786-L" from the list of devices.
- Once connected, the LED indicator will flash blue slowly.
4.2.2 USB Dongle Pairing (for PC)
For optimal PC compatibility, use the provided USB dongle.
- Plug the USB dongle into an available USB port on your PC.
- Power on the headset. It will automatically attempt to connect to the dongle.
- The LED indicator on the dongle will turn solid blue once connected.
- If connection fails, ensure your PC's Bluetooth drivers are updated or try a different USB port.

Image: The Earbay BT786-L headset in use with a laptop, demonstrating connection via the USB dongle.
Note: If the headset fails to connect, please update your computer's Bluetooth driver or use a Bluetooth adapter.

Image: A flowchart illustrating the connection process for the Earbay headset to a computer and various conferencing applications like Skype, Zoom, and Microsoft Teams.
5. Operating Instructions
5.1 Call Management
- Answer Call: Press the Multi-function button once.
- End Call: Press the Multi-function button once.
- Reject Call: Press and hold the Multi-function button for 2 seconds.
- Redial Last Number: Double-press the Multi-function button.
- Mute/Unmute: Press the dedicated mute button on the microphone boom.
5.2 Music Playback
- Play/Pause: Press the Multi-function button once.
- Next Track: Press and hold the Volume Up button.
- Previous Track: Press and hold the Volume Down button.
5.3 Voice Assistant
Activate your device's voice assistant (Siri, Google Assistant, etc.) by double-pressing the Multi-function button when not on a call.

Image: A user wearing the Earbay headset, holding a smartphone with a voice assistant interface displayed, indicating voice command functionality.
6. Maintenance
- Clean the headset regularly with a soft, dry cloth.
- Avoid exposing the headset to extreme temperatures, moisture, or corrosive substances.
- Store the headset in a cool, dry place when not in use.
- Do not attempt to disassemble or modify the headset, as this will void the warranty.
7. Troubleshooting
| Problem | Solution |
|---|---|
| Headset does not power on. | Ensure the headset is charged. Connect it to a power source using the USB cable. |
| Cannot pair with device. | Ensure the headset is in pairing mode (LED flashing blue/red). Turn off and on Bluetooth on your device. For PC, try re-inserting the USB dongle or updating Bluetooth drivers. |
| No sound or low volume. | Check headset and device volume levels. Ensure the headset is selected as the audio output device on your computer or phone. |
| Microphone not working. | Ensure the microphone is not muted. Check microphone settings on your device and conferencing software. Ensure the headset is selected as the audio input device. |
| Poor audio quality. | Move closer to your connected device to reduce interference. Ensure no other devices are interfering with the Bluetooth signal. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | BT786-L |
| Connectivity | Bluetooth 5.0, Wireless (USB Dongle) |
| Ear Placement | On Ear |
| Microphone | Noise Cancelling |
| Playtime | Up to 28 hours |
| Charging Time | Approx. 2 hours |
| Standby Time | Up to 30 days |
| Weight | 0.2 Kilograms (7 ounces) |
| Dimensions | 5.51 x 1.97 x 6.69 inches |
| Compatible Devices | PCs, Bluetooth-enabled devices |

Image: An infographic highlighting the headset's battery life: 28 hours of talking time and a 2-hour charging time.
9. Warranty and Support
Earbay products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or customer service, please refer to the contact information provided in your product packaging or visit the official Earbay website.
Contact information: support@earbayheadset.com
10. Official Product Videos
Watch this official video for additional guidance and product demonstrations.
Bluetooth Headphones with Mic
Video: An official product video from Earbay-Direct demonstrating the features and usage of the Bluetooth Headphones with Mic. This video provides a comprehensive overview of the headset's capabilities.





