1. Introduction
This manual provides detailed instructions for the UGREEN Bluetooth 5.4 Audio Transmitter, Model 65706. This device allows you to wirelessly stream audio from non-Bluetooth sources, such as airplane entertainment systems, TVs, or treadmills, to your Bluetooth headphones or AirPods. It supports dual pairing, enabling two sets of headphones to receive audio simultaneously.
Image 1: UGREEN Bluetooth 5.4 Audio Transmitter with its accessories.
2. Package Contents
- UGREEN Bluetooth 5.4 Audio Transmitter
- Dual 3.5mm AUX Jack Adapter (for airplane use)
- USB-C Charging Cable
- Storage Pouch
- User Manual (this document)
Image 2: Included accessories for the UGREEN Bluetooth Audio Transmitter.
3. Product Overview
Familiarize yourself with the components of your UGREEN Bluetooth Audio Transmitter:
Image 3: Detailed diagram of the UGREEN Bluetooth Audio Transmitter's features.
- Connection Indicators: Blue LEDs indicate active Bluetooth connections for Device 1 and Device 2.
- Device 1 / Device 2 Buttons: Separate buttons for pairing and managing each connected headphone.
- Battery Status Indicators: LED lights show the current battery level.
- Type-C Charging Port: For charging the device.
- ON/OFF Switch: Powers the device on or off.
- 3.5mm Audio Jack: Connects to audio sources.
4. Setup
4.1 Charging the Transmitter
Before first use, fully charge the transmitter. Connect the provided USB-C charging cable to the Type-C charging port on the device and a USB power source (e.g., wall adapter, computer USB port). The battery indicator LEDs will show charging status and turn off when fully charged. A full charge provides up to 19 hours of battery life.
Image 4: The transmitter being charged via its USB-C port.
4.2 Connecting to an Audio Source
Plug the integrated 3.5mm audio jack of the transmitter into the audio output port of your desired device. For airplane entertainment systems with dual 3.5mm jacks, use the included dual 3.5mm AUX jack adapter.
- Single 3.5mm Jack: Directly plug the transmitter's 3.5mm jack into the audio port of TVs, computers, or treadmills.
- Dual 3.5mm Jacks (Airplanes): Attach the dual 3.5mm AUX jack adapter to the transmitter's 3.5mm jack, then insert the adapter into the airplane's audio ports.
Image 5: Transmitter connected to an airplane entertainment system.
4.3 Pairing with Bluetooth Headphones/AirPods
The transmitter supports pairing with one or two Bluetooth headphones simultaneously.
- Power On: Slide the ON/OFF switch to the "ON" position. The connection indicators will flash, indicating pairing mode.
- Pair First Device:
- Put your first Bluetooth headphones (e.g., AirPods) into pairing mode. Refer to your headphone's manual for specific instructions.
- Press the "Device 1" button on the transmitter. The corresponding LED will flash rapidly.
- Once paired, the "Device 1" LED will turn solid blue.
- Pair Second Device (Optional):
- Put your second Bluetooth headphones into pairing mode.
- Press the "Device 2" button on the transmitter. The corresponding LED will flash rapidly.
- Once paired, the "Device 2" LED will turn solid blue. Both devices will now receive audio.
Image 6: Visual guide for pairing process.
5. Operating Instructions
5.1 Power On/Off
- Power On: Slide the ON/OFF switch to "ON".
- Power Off: Slide the ON/OFF switch to "OFF".
5.2 Automatic Reconnection
The transmitter can remember up to 6 previously paired devices. When powered on, it will automatically attempt to reconnect to the last paired devices within range.
5.3 Reset Pairing
If you experience pairing issues or wish to clear all paired devices, hold both "Device 1" and "Device 2" buttons simultaneously for approximately 10 seconds until the LEDs flash, indicating a reset.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
- Storage: Store the transmitter and its accessories in the provided pouch when not in use to protect it from dust and scratches. Keep in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the device frequently. Charge it regularly, even if not in use for extended periods.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Cannot pair with headphones. |
|
| No sound or intermittent audio. |
|
| Short battery life. |
|
| Connection drops frequently. |
|
8. Specifications
| Feature | Detail |
|---|---|
| Model | 65706 |
| Brand | UGREEN |
| Bluetooth Version | 5.4 |
| Connector Type | 3.5mm Stereo Audio |
| Battery Life | Up to 19 hours |
| Transmission Distance | Up to 10 meters (33 feet) |
| Charging Port | USB-C |
| Battery Type | Lithium Metal (included) |
| Dimensions (approx.) | 4.8 cm x 4.8 cm (main body) |
9. Warranty and Support
UGREEN products come with a standard manufacturer's warranty. For specific warranty details, please refer to the warranty card included with your product or visit the official UGREEN website. For technical support, troubleshooting assistance, or any inquiries, please contact UGREEN customer service through their official channels or visit the UGREEN Store on Amazon.