1. The appearance is small and elegant. The overall appearance is just a simple square. Through this device, users can sit 10 meters and easily wirelessly transmit, play and control your for , for iTouch via Bluetooth. Or all audio files in the Bluetooth device 2. The standard 30PIN line output port can be directly connected to the base or the audio line input port, and the output level can make the audio reach full power output without additional line amplification 3. Through the connection and disconnection of different transmitting 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 4. 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. 5. Note: Only Analog Signal Audio speakers are supported, digital audio speakers are not supported. This item is Not Compatible with for Car Stereo System. This item is Not Compatible with for Digital Signal Audio Speakers. Product Instructions: Equipment identification: I-WAVE 1. 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. 2. After the device enters the pairing mode, turn on the bluetooth function of the computer, mobile phone, etc. and other digital products with bluetooth output function, and search or find the bluetooth device,find the bluetooth device of I-WAVE to connect, 3. After the pairing is successful, the front and rear Bluetooth will flash slowly, indicating that the connection is successful, and you can wirelessly. 4. During normal operation, if you want to change the playback device, you need to interrupt the connected computer, mobile phone and other Bluetooth output devices, and then pair and connect with other Bluetooth devices. If you cannot connect, please remove the product and reinsert it. Type: Bluetooth Receiver Adapter Output: 30pin audio output color:White Material:plastic size:44 x 35 x 7mm Package Contents: 1 x 30 Pin Bluetooth 5.1 Audio Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.