1. Introduction
The JXTZ Bluetooth Transmitter Receiver (Model BR08) is a versatile 2-in-1 audio adapter designed to add Bluetooth capabilities to non-Bluetooth devices. It functions as both a Bluetooth transmitter (TX mode) and a Bluetooth receiver (RX mode), allowing for wireless audio streaming in various scenarios, including car audio systems, home stereos, TVs, and portable devices.
This manual provides detailed instructions for the proper setup, operation, and maintenance of your device.
2. Package Contents
- 1x JXTZ Bluetooth Receiver Transmitter (BR08)
- 1x Type-C Charging Cable
- 1x Product Manual
3. Device Overview
Familiarize yourself with the device's components and controls:

Image: Labeled diagram of the JXTZ Bluetooth Transmitter Receiver, highlighting the Multifunction button, Bluetooth indicators, Mic, RX/TX switch, and Type-C charging port.
- Bluetooth 1 Indicator: Shows connection status for the first paired device.
- Bluetooth 2 Indicator: Shows connection status for the second paired device.
- Mic: Built-in microphone for hands-free calling.
- RX/TX Mode Switch Button: Toggles between Receiver (RX) and Transmitter (TX) modes.
- Multifunction Button:
- Long press: Power on/off.
- Click: Pause/Play audio, Answer/Hang up calls.
- Type-C Charging Port: For charging the device.
4. Setup and Operation
4.1 Charging the Device
Before initial use, fully charge the device. The adapter can be used while charging.
- Connect the provided Type-C cable to the charging port on the adapter and to a USB power source (e.g., wall adapter, computer USB port).
- Charging time is approximately 1 hour for a full charge.
- The device offers up to 13 hours of usage in RX mode and 16 hours in TX mode on a full charge.

Image: The JXTZ Bluetooth adapter connected via its Type-C port for charging, with icons indicating overvoltage, short-circuit, overcurrent, and over-temperature protection, and battery life details.
4.2 Power On/Off
- To Power On: Long press the Multifunction button until the indicator lights illuminate.
- To Power Off: Long press the Multifunction button until the indicator lights turn off.
4.3 Mode Selection (RX/TX)
Use the RX/TX Mode Switch Button on the side of the device to select the desired operating mode.
4.4 Receiver (RX) Mode
In RX mode, the adapter receives audio wirelessly from a Bluetooth-enabled device (e.g., smartphone, tablet) and outputs it via the 3.5mm AUX jack to a non-Bluetooth audio system (e.g., car stereo, wired speakers).

Image: The JXTZ Bluetooth adapter in RX mode, shown connected to a portable speaker and a car's AUX input, receiving music wirelessly from a smartphone.
- Switch the RX/TX button to the RX position.
- Plug the 3.5mm AUX connector of the adapter into the AUX input of your car stereo, wired speaker, or headphones.
- Power on the adapter by long-pressing the Multifunction button. The Bluetooth indicator lights will flash, indicating pairing mode.
- On your smartphone or tablet, enable Bluetooth and search for new devices. Select "BR08" from the list of available devices to pair.
- Once paired, the Bluetooth indicator light will remain solid. You can now stream audio wirelessly.
- Dual Device Connection (RX Mode): After connecting the first device, you can connect a second device. Pair the first device, then disable Bluetooth on the first device. Pair the second device. Re-enable Bluetooth on the first device; it should automatically reconnect.
- Hands-Free Calling: When connected to a smartphone, use the Multifunction button to answer/hang up calls. The built-in microphone allows for hands-free communication.
4.5 Transmitter (TX) Mode
In TX mode, the adapter transmits audio wirelessly from a non-Bluetooth audio source (e.g., TV, PC, airplane entertainment system) to a Bluetooth-enabled receiving device (e.g., Bluetooth headphones, Bluetooth speaker).

Image: The JXTZ Bluetooth adapter in TX mode, shown connected to an airplane seat's audio jack and a television, transmitting audio to Bluetooth headphones.
- Switch the RX/TX button to the TX position.
- Plug the 3.5mm AUX connector of the adapter into the audio output jack of your non-Bluetooth device (e.g., TV, desktop computer, airplane entertainment system).
- Power on the adapter by long-pressing the Multifunction button. The Bluetooth indicator lights will flash, indicating pairing mode.
- Put your Bluetooth headphones or speaker into pairing mode.
- The adapter will automatically search for and connect to nearby Bluetooth receiving devices. Once connected, the Bluetooth indicator light will remain solid.
- Dual Device Connection (TX Mode): After connecting the first Bluetooth headphone/speaker, put the second Bluetooth headphone/speaker into pairing mode. The adapter will attempt to connect to the second device. The dual indicator lights will show the connection status of both devices.

Image: A visual guide demonstrating the connection process for both RX mode (connecting to a speaker from a phone) and TX mode (connecting to a TV with Bluetooth headphones).
4.6 Wide Compatibility
The JXTZ BR08 adapter offers broad compatibility for various audio setups:

Image: A diagram showing the JXTZ Bluetooth adapter's compatibility. In TX mode, it connects to Switch, TV, Desktop, and transmits to Bluetooth headsets or audio devices. In RX mode, it connects to Smartphones, Tablets, and transmits to Amplifiers or Car Audio Systems.
5. Maintenance
- Keep the device dry. Moisture can damage electronic circuits.
- Do not expose the device to extreme temperatures.
- Clean the device with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Store the device in a clean, dust-free environment when not in use.
6. Troubleshooting
- Device not powering on: Ensure the device is fully charged. Connect it to a power source using the Type-C cable.
- Cannot pair with a device:
- Ensure the adapter is in the correct TX or RX mode.
- Make sure the adapter is in pairing mode (flashing indicator lights).
- Ensure the target Bluetooth device (headphones, speaker, phone) is also in pairing mode.
- Move the devices closer to each other (within 10 meters).
- Turn off other Bluetooth devices nearby to avoid interference.
- Restart both the adapter and the target Bluetooth device.
- No audio or poor audio quality:
- Check if the 3.5mm AUX cable is securely connected to both the adapter and the audio source/receiver.
- Ensure the volume on both the adapter and the connected audio device is turned up.
- Verify that the adapter is successfully paired and connected (solid indicator light).
- If using in TX mode, ensure the audio source is playing sound through its 3.5mm output.
- If using in RX mode, ensure the connected speaker/car stereo is set to the correct AUX input.
- Dual pairing issues: When connecting two devices, ensure the first device is paused or disconnected before attempting to pair the second. Reconnect the first device after the second is paired.
7. Specifications
| Model | BR08 |
| Bluetooth Version | V5.3 |
| Bluetooth Range | 10 meters (33 feet) |
| Frequency Range | 10Hz-20kHz |
| Interface | 3.5mm AUX |
| Supported Protocols | A2DP/AVRCP |
| Usage Duration (RX Mode) | Up to 13 hours |
| Usage Duration (TX Mode) | Up to 16 hours |
| Charging Time | Approximately 1 hour |
| Charging Port | Type-C |
| Special Features | Built-in Mic, Fast Charging, CVC Noise Cancellation, Dual Connect |
| Dimensions | 3 x 1.5 x 0.7 inches |
| Weight | 2.88 ounces (0.18 lbs) |
8. Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official JXTZ website. Keep your purchase receipt for warranty claims.