Description: Supports Bluetooth 5.1 protocol specification Supports Lingo protocol and device authentication Supports automatic identification of certified and non-certified bass sound Transmission distance: not less than 10 meters Interface: standard iPod 30-pin interface Dimensions: 44*36*7mm 2 indicator lights flash alternately when there is no connection, and the blue light flashes slowly after connection Specifications: Product instructions for use. Equipment identification: I-WAVE 1. Turn on the speaker, connect the product to the docking station, and the front and rear LED lights start to flash quickly, indicating that it has entered pairing mode, indicating that the device is working normally. Since the machine is factory-set to automatically reconnect, turn it on for 30 seconds before pairing the Bluetooth device. 2. After the device has entered 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 I-WAVE Bluetooth device to connect, 3. When the pairing is successful, the front and rear Bluetooth LEDs flash slowly, indicating that the connection is successful and you can play music wirelessly. 4. During normal operation, if you want to change the playback device, you need to disconnect the connected computer, mobile phone and other Bluetooth output devices, and then pair and connect to other Bluetooth devices. If you can't connect, remove this product and insert it again. That's it. Package Contents: 1x 30 Pin Bluetooth Music Audio Receiver Notes: Note: Only analog speakers are supported, digital speakers are not supported. If you can't use this product after receiving the goods, it means that this adapter is not compatible with your speaker, it is not a quality problem, please don't give us bad reviews, thank you! This item is not compatible with car stereo systems. This item is not compatible with digital speakers.