Small and elegant appearance. The overall look is just a simple black square. Through this device, users can sit 10 meters away and easily wirelessly transmit, play, and control your [Device Name] for iTouch via Bluetooth. Or any audio files in the Bluetooth device. The standard 30PIN line output port can be directly connected to the [Device Name] base or [Device Name] audio line input port, and the output level can make the sound reach full power without additional line amplification. Through the connection and disconnection of different broadcasting equipment, the function of switching the audio source without wires and zero plugging and unplugging can be realized, saving 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 within one meter of the speaker. Support for Bluetooth 5.1 protocol specification. Support Lingo protocol and device authentication. Support automatic identification of certified and non-certified base audio. Transmission distance: no 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, connect the product to the dock, and the front and rear LED lights start flashing, indicating that it has entered the pairing mode, indicating that the device is working normally. Because the machine is factory-set to automatically reconnect, please turn it on before pairing the Bluetooth device. After the device enters the pairing mode, turn on the Bluetooth function on the computer, mobile phone, etc., and other digital products with Bluetooth output function, and search or find the Bluetooth device, find the I-WAVE Bluetooth device to connect, After the pairing is successful, the front and rear Bluetooth lights flash slowly, indicating that the connection is successful, and you can wirelessly. During normal operation, if you want to change the playback device, you must disconnect the connected computer, mobile phone, and other Bluetooth output devices, and then pair and connect to other Bluetooth devices. If you cannot connect, remove the product and reinstall it. Note: Only analog speakers are supported, digital speakers are not supported. This item is not compatible with [Device Name] car stereo systems. This item is not compatible with [Device Name] digital speakers. Color: black Material: plastic Size: about 44x35x7mm Package Contents: 1 * Bluetooth receiver transmitter Only the above package content, other products are not included. Note: Light shooting 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.