Fangrui Product Details 1. D9 2-in-1 Old-fashioned Audio Car Bluetooth Receiver Transmitter Nfc Music Bluetooth Adapter 2. Features: 3. Receivetransmit Two-in-one, One-button Switching Is More Convenient 4. Bluetooth 5.1 High-performance Chip, Stable Transmission, Low Latency 5. Large-capacity Battery, Long Battery Life 6. Rich Interfaces, Strong Compatibility, Support Various Audio Interfaces 7. Support Txrx Dual Mode 8. Support Nfc Mobile Device Touch Connection, Convenient And Fast, No Manual Operation 9. With Infrared Remote Control, 5-8 Meters Infrared Remote Control, The Operation Is More Convenient 10. 30m Range Connection, Long-distance Barrier-free Transmission 11. U Disktf Card Playback, Plug And Play, Lossless Decoding 12. Product Parameters: 13. Material: Abs 14. Bluetooth Version: 5.1 15. Audio Decoding: Sbc 16. Bluetooth Protocol Support: A2dpavrcp 17. File Format: Mp3wavwmaflacape 18. Frequency Range: 2400mhz-2483.5mhz 19. Frequency Response: 20hz-20khz 20. Output Load: 16-320 Ohms Adaptive 21. Transmission Distance: 0-30m (open Place) 22. Audio Input: Bluetooth Audio U Disk Aux Rca 23. Output: Aux Rca 24. Charging Interface: Type-cusb-c 25. Battery Capacity: 500mah Lithium Battery 26. Compatibility: Android And Ios Mobile Phones, Tablets, Tvs, Game Consoles And Other Bluetooth Devices, And Audio Equipment With Audio Input Interface 27. Product Size: About 90 X 58 X 22mm 28. Packing List: 29. -host X 1 30. -audio Cable X 1 31. -rca Cable X 1 32. -power Cable X 1 33. -english Manual X 1 34. -infrared Remote Control X 1