Bluetooth 5.1 Sound Receiver Transmitter 2 in 1 Noise Reduction Low Latency Plug and Play Portable Bluetooth Car Adapter 

   Feature: 

   1. 2 in 1 Design: This 2 in 1 sound adapter, one button control, easily switch between transmit and receive modes. Easily enable Bluetooth on your TV or projector using Transmitter mode via the 3.5mm sound jack.  

   2. Bluetooth 5.1: The latest version 5.1 Bluetooth wireless communication standard, low latency, noise reduction, improved speed and range, 15m transmission distance, large signal range coverage, fast and stable connection, and enjoy wireless.  

   3. Portable and Easy to Operate: The Bluetooth sound adapter features a slim design with a minimal footprint and with a 3.5mm plug, it is small, lightweight and portable. Plug and play, easy to set up, one‑key operation, clear status indicator.  

   4. Multifunctional: This Bluetooth car adapter enables hands free Bluetooth calling and navigation voice through the built in microphone, and has a built in 140mAh lithium ion rechargeable battery for 4 hours of continuous use.  

    5. Scope of Application: This Bluetooth 5.1 sound receiver transmitter Lavalier design, firm and not easy to fall, easily add Bluetooth to your car sound system, home sound, speakers, wired headphones through the 3.5mm AUX socket. 

    Specification: 

    Item Type: Bluetooth Sound Receiver Transmitter

 Material: ABS

 Size: Approx. 60 x 20mm/2.4 x 0.8in

 Bluetooth Version: 5.1

 Connection Range: Approx. 15m/49.2ft

 Interface: 3.5mm Sound Interface

 Frequency Response Range: 10Hz-20KHz

 Signal to Noise Ratio: Less Than 110dB

 Function: Receiver Transmitter 2 in 1

 Built in Battery Type: Li ion Battery

 Battery Capacity: 140mAh

 Battery Model: 401224 

    Package List: 

    1 x Host 

    1 x USB to Type C Charging Cable 

    1 x 3.5mm Sound Head 

    1 x Chinese and English Manual 

    Note: 

       Please allow some errors due to manual measurement.   

   How to use:       RX receive mode:   

       1. Press and hold the power button for 3 seconds to power on:   

       2. Turn the mode key to the RX position, the blue light flashes;   

       3. Turn on the Bluetooth of the mobile phone to search for B28, click connect, and the blue light is always on after connecting.   

       TX transmit mode:   

       1. Press and hold the power button for 3 seconds to power on:   

       2. Turn the mode key to the TX position, the red light flashes;   

       3. Turn on the receiving device that needs to be paired, and make it into the pairing state, the adapter will automatically connect, and the red light will be on after connecting.   

       Common Troubleshooting:   

       No sound in receive mode:   

       Whether the Bluetooth of the mobile phone is connected: whether the device such as the speaker has been switched to the AUX sound input mode   

       transmitter mode fails to connect:   

       1. Make sure the adapter has switched to TX transmission mode (red light flashing);   

       2. The Bluetooth headset, speaker cannot be connected with Bluetooth devices such as mobile phones;   

       3. Some Bluetooth headsets need to be initialized (restored to factory settings) before they can be connected