Bluetooth 5.1 30Pin Audio Receiver I-WAVE Adapter 1. Device identification: I-WAVE 2. Bluetooth version: V2.1+EDR 3. Bluetooth protocol: 5.1 4. Support protocol: A2DP&AVRCP 5. Frequency range: 2.4Ghz-2.4835Ghz 6. Interface: standard for iPod 30pin interface 7. Bluetooth distance: 10 meters 8. Net weight: 10 grams 9. Easy to operate, insert the speaker 30-PIN 10. Super long transmission distance, the effective range is not less than 10 meters 11. The two indicators flash alternately when not connected, and the blue light flashes slowly after connection 12. Support Lingo protocol and device authentication 13. Support automatic identification of certified and non-certified basic audio 14. Bluetooth Music Streaming Media Adapter for 30 Pin Music Docking Station 15. The appearance is small and elegant, the overall appearance is just a simple black square 16. Users can sit 10 meters away and easily wirelessly transfer, play and control all audio files in your for iPhone, for iTouch or Bluetooth devices via Bluetooth 17. The standard 30PIN line output port can be directly connected to the for Apple dock or the for Apple audio line input port, and the output level can reach full power output without additional line amplification 18. Through the connection and disconnection of different transmitting devices, the audio source switching function without wiring and zero plugging can be realized, which saves the trouble of plugging and unplugging cables for traditional audio devices to switch audio sources 19. Turn on the speaker, insert the product into the docking station, and the front and rear LED lights start to flash quickly, indicating that the device has entered the pairing mode, indicating that the device is working normally. Since the machine is automatically reconnected by default, please turn it on for 30 seconds before pairing the Bluetooth device 20. After the device enters the pairing mode, turn on the Bluetooth function of the computer, mobile phone an