The appearance is small and elegant. The overall appearance is just a simple black square. Through this device, users can sit 10 meters away and easily wirelessly mit, play and control your for , for iTouch via Bluetooth. Or all audio files in the Bluetooth device. The standard 30PIN line output port can be directly connected to the for base or the for audio line input port, and the output level can make the audio reach full power output without additional line amplification. Through the connection and disconnection of different mitting equipment, the function of audio source switching without wiring and zero plugging and unplugging can be realized, which saves the trouble of plugging and unplugging the cable for traditional audio equipment to switch the audio source. Release the shackles of the connecting line on the user, so that the user can enjoy high-fidelity music anywhere in the room without having to place the audio source device within one meter of the speaker. Support Bluetooth 5.1 protocol specification. Support Lingo protocol and device authentication. Support automatic identification of certified and non-certified base audio. mission distance: not less than 10 meters. Interface: standard 30pin interface. 2 indicator lights flash alternately when there is no connection, and the blue light flashes slowly after connection. Product Instructions: Equipment identification: I-WAVE Turn on the speaker, plug the product into the docking seat, and the front and rear LED lights begin to flash , indicating that it has entered the pairing mode, indicating that the device is working normally. Since the machine is factory defaulted to automatically reconnect, please turn it on for before pairing the Bluetooth device. After the device enters the pairing mode,turn on thebluetooth function of the computer, mobile phone, etc. and other digital products with bluetooth output function,and search or find th