Features: 1. Four-In-One True Stereo, Bluetooth Transceiver Adapter 2. Receiving Function, Bluetooth Connection/Aux Connection, The Bluetooth Audio Receiver Adopts Dual Output (Usb/Aux) Interface Design, Allowing You To Enjoy The Fun Of Wireless Music 3. Instantly Transform Into A Bluetooth Speaker, An Ordinary Speaker Can Be Instantly Upgraded To A Bluetooth Speaker, Eliminating The Need For Complicated Wiring. Mobile Phone/Computer Bluetooth Wireless Connection, More Freedom And Convenience 4. Aux Wired Connection, Usb Connection Is Required To Connect Aux Interface Device Navigation Broadcast, For Cars Without In-Car Bluetooth, The Adapter Can Be Inserted Into The Car'S Usb Port, And The Mobile Phone Navigation Becomes The Car Navigation In Seconds, With Clearer Broadcast And Driving (Calls Are Not Supported) Description: 1. Model: H210 2. Bluetooth Pairing Name: Bt_dongle 3. Bluetooth Version: V5.3 4. Product Name: Bluetooth Audio Receiver/Transmitter 5. Bluetooth Protocol: A2dpp Avrcp 6. Frequency Range: 2.402ghz-2.480ghz 7. Transmit Mode Input: Usb+Aux 8. Receive Mode Output: Usb+Aux 9. Working Distance: About 10m 10. Working Voltage: Dc-5v Material: pc Color as shown Package Contents: 1 x USB Bluetooth Receiver And Transmitter 1 x Cover 1 x Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.