Fangrui Product Details 1. M416 Car Bluetooth Receiver Player Audio Receiver Adapter Aux Converter 2. Battery Capacity: 120mah 3. Usage Time: About 10h 4. Sensitivity: -42db 5. Charging Interface: Type-cusb-c 6. Bluetooth Version: 5.3 7. Transmission Distance: About 10m 8. Signal To Noise Ratio: Greater Than 90db 9. Frequency Response: 20hz-20khz 10. Output Power Range: 33mw Rl = 16 Ohms 11. Audio Transmission Mode: A2dp\avctp\avdtp\avrcp\hfp 12. Frequency Range: 2400-2483.5mhz 13. Size: About 8.75 X 1.4cm 14. Features: 15. Widely Compatible, Plug And Play, Audio Devices With Aux Input Interface Can Be Used 16. Mobile Phone Connected To The Car Stereo, The Music In The Phone Can Listen To, Support Navigation Broadcast, Safe Travel 17. Built-in Microphone, Hands-free Amplification, Clear Calls, Safer Driving 18. Power On Automatically Back To Connect, Easy To Use 19. Connect Audio Headphones, Wired To Wireless 20. Bluetooth 5.3, Low Power Consumption, High Speed, Stable Transmission 21. Built-in High-performance Decoding Module, With Bluetooth 5.3 Lossless Transmission, High-definition Sound Quality, Stereo Sound Effect 22. Built-in Digital Noise Reduction Chip, Improve Voice Sensitivity