Fangrui Product Details 1. Br11 With Screen Bluetooth Audio Receiver Mp3 Player 2. Bluetooth Version: 5.3 3. Transmission Distance: About 15m 4. Battery Capacity: 240mah 5. Charging Time: About 2h 6. Use Time: About 12h 7. Charging Interface: Type-cusb-c 8. Charging Voltage: 5v 9. Packing List: Receiver X1, Charging Cable X1, Audio Cable X1, Adaptor X1 10. Features: 11. Bluetooth 5.3, Low Power Consumption And Stable Transmission, Clearer Sound Quality 12. Power On Automatically Connect Back To The Paired Bluetooth Devices 13. Five Minutes No Device Connection, Automatic Shutdown 14. Support Bluetooth Stereo Music Dsp Technology 15. Wake Up Voice Assistant Function 16. Bluetooth Call With Dsp Noise Reduction 17. Can Be Connected To Two Cell Phones At The Same Time 18. Synchronize Cell Phone Time, 24h Time Display 19. Receive Bluetooth Signal, Through Aux Audio Interface To Stereo, Headphones And Other Devices 20. Plug Into The Car Aux Port, So That The Car Stereo Into Car Bluetooth