Introduction
The UGREEN Bluetooth Handsfree Adapter is designed to upgrade your audio system with wireless Bluetooth capabilities. It allows you to stream music, receive navigation instructions, and make hands-free calls from your smartphone or other Bluetooth-enabled devices to your car stereo, home speaker system, or amplifier via a 3.5mm AUX input. This adapter supports both Bluetooth 6.0 (Upgraded Model) and Bluetooth 5.4 (Basic Model) versions, offering high-quality audio decoding including LDAC, AAC, and SBC codecs.
Key Features
- Bluetooth 6.0/5.4: Provides stable and fast wireless connection.
- High-Resolution Audio: Supports LDAC, AAC, and SBC codecs for superior sound quality.
- Hands-Free Calling: Built-in microphone with AI noise cancellation for clear two-way audio.
- Voice Navigation: Stream navigation instructions directly to your audio system.
- Dual Device Connection: Connects to two devices simultaneously, allowing seamless switching between calls and music.
- Auto Reconnection: Automatically reconnects to previously paired devices.
- Wide Compatibility: Works with car audio systems, home speakers, amplifiers, and headphones with a 3.5mm AUX input.
- Extended Range: Up to 10 meters (33 feet) transmission distance without blocking.
- Durable Design: Features a spring compression cable (0.5m-1.5m) made of TPE material for anti-winding and elasticity.
Image: UGREEN Bluetooth 6.0 Adapter for Car highlighting features.
Package Contents
Please check the package for the following items:
- UGREEN Bluetooth Handsfree Adapter (CM309-70601)
- User Manual (PDF available online: View PDF)
Image: Product packaging.
Setup Instructions
Follow these steps to set up your UGREEN Bluetooth Handsfree Adapter:
- Connect the Adapter: Plug the USB-A end of the adapter into a USB power source (e.g., car USB port, USB charger) and the 3.5mm AUX jack into your audio system's AUX input. Ensure the USB port provides sufficient power (e.g., USB 2.0 or higher).
- Power On: The adapter will automatically power on when connected to a power source. The indicator light on the adapter will show its status.
- Activate Bluetooth: Turn on Bluetooth on your smartphone or other audio device.
- Pairing: Search for available Bluetooth devices on your phone. Select "Ugreen-70601" (or similar name) from the list to connect.
- Confirmation: Once successfully paired, the adapter's indicator light will change (e.g., solid blue) and you may hear an audio confirmation.
- Enjoy Music: Open your music app or navigation app and start playing audio.
Image: Visual guide for connecting the adapter.
Operating Instructions
Music Streaming
- After successful pairing, any audio played on your connected device will be streamed to your car or home audio system.
- Control music playback (play/pause, skip tracks) directly from your smartphone or audio device.
Hands-Free Calling
- When a call comes in, your audio system will typically mute music and ring.
- Accept calls directly from your phone. The adapter's built-in microphone will pick up your voice.
- Ensure your phone's audio output is set to the Bluetooth adapter (e.g., "Ugreen-70601") during calls for hands-free functionality.
Image: Hands-Free Calling & Navigation in a car.
Dual Device Connection
- The adapter can connect to two Bluetooth devices simultaneously.
- To switch between devices, simply pause audio on one device and start playing on the other. The adapter will automatically switch the audio source.
- For calls, the adapter will prioritize the active call.
Image: Dual Devices Connection.
Auto Reconnection
- The adapter will automatically attempt to reconnect to the last paired device when powered on and within range.
User Tips
- Microphone Placement: For optimal call clarity, ensure the adapter is positioned where the microphone is not obstructed and is relatively close to you.
- Sound Quality: If you have the LDAC version, ensure your phone also supports LDAC and that it is selected in your phone's Bluetooth settings for the best audio experience.
- Power Source: Use a stable USB power source (e.g., a dedicated car charger or a robust USB port) to prevent potential noise or disconnections.
- Volume Levels: Adjust the volume on both your phone and your audio system for the desired output. If the volume is lower than expected, try increasing the volume on your phone first.
- Siri/Voice Assistant: The adapter is reported to work well with voice assistants like Siri, allowing for seamless voice commands.
Troubleshooting
| Problem | Solution |
|---|---|
| Device does not power on. | Ensure the USB-A connector is securely plugged into a working USB power source. Try a different USB port or power adapter. |
| Cannot pair with my device. | Ensure Bluetooth is enabled on your device. Place the adapter and your device close to each other. Turn off and on the adapter/Bluetooth on your device. Forget previous pairings and try again. |
| No sound or low volume. | Check if the 3.5mm AUX jack is fully inserted into your audio system. Adjust volume levels on both your phone and the audio system. Ensure the correct input source (AUX) is selected on your audio system. |
| Sound quality is poor or has static/noise. | Ensure the adapter is not too close to strong electromagnetic interference sources. Try a different USB power source. For LDAC models, ensure your device supports and is using the LDAC codec. |
| Hands-free calling not working. | Ensure your phone's audio output is directed to the Bluetooth adapter during a call. Check microphone settings on your phone. Ensure the adapter's microphone is not obstructed. |
| Device disconnects frequently. | Ensure your device is within the 10m (33ft) transmission range. Avoid physical obstructions between the adapter and your device. Check for other strong wireless signals that might cause interference. |
Specifications
| Feature | Upgraded Model (CM309-70601) | Basic Model |
|---|---|---|
| Model Number | CM309-70601 (Internal Model BT525) | N/A |
| Bluetooth Version | 6.0 | 5.4 |
| Codec Formats | SBC / AAC / LDAC | SBC |
| Transmission Distance | 10m / 33ft (no blocking) | 10m / 33ft (no blocking) |
| Call Support | Yes | Yes |
| Multi-Device Connection | Dual-device connection | Dual-device connection |
| Audio Interface | 3.5mm Audio | 3.5mm Audio |
| Power Interface | USB-A | USB-A |
| Frequency Band | 2400MHz-2483.5MHz | 2400MHz-2483.5MHz |
| Max. RF Output Power | 4dBm (EIRP) | 4dBm (EIRP) |
| Bluetooth Profile | A2DP/AVRCP/HSP/HFP | A2DP/AVRCP/HSP/HFP |
| Frequency Response | 20Hz-40KHz | 20Hz-20KHz |
| Output Level (Receiving) | > 740mVrms | > 740mVrms |
| Certifications | Hi-Res Audio Wireless, LDAC, CE, FCC | CE, FCC |
Note: The data is measured by UGREEN lab and may vary based on specific circumstances.
Image: Feature comparison between Upgraded and Basic models.
Maintenance
- Keep the device dry. Moisture can damage the internal circuits.
- Do not expose the device to extreme temperatures.
- Avoid dropping or strong impacts, as this can damage the internal components.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or detergents.
- Store the device in a clean, dust-free environment when not in use.
Warranty and Support
UGREEN products come with a standard warranty. For detailed warranty information, technical support, or service inquiries, please refer to the official UGREEN website or contact their customer service directly. Please retain your proof of purchase for warranty claims.
Safety Information
- Do not disassemble or modify the device.
- Keep out of reach of children.
- Avoid using the device in environments with high humidity or extreme temperatures.
- Dispose of the device responsibly according to local regulations.
Product Video
Video: Demonstrates the UGREEN Bluetooth adapter's use in both car and home environments, highlighting its ease of connection and hands-free calling features.