Supports Bluetooth 5.1 protocol specification Supports device authentication and automatic identification of certified and non-certified base audio Transmission distance: not less than 10 meters Interface: standard iPod 30-pin interface Dimensions: 44 x 36 x 7 mm Two indicator lights flash alternately when there is no connection; blue light flashes slowly after connection Specifications: Product Instructions for Use Equipment identification: I-WAVE 1. Turn on the speaker and plug the product into the docking seat. The front and rear LED lights begin to flash rapidly, indicating that it has entered pairing mode and is working normally. Since the device is factory-set to automatically reconnect, wait 30 seconds before pairing with a Bluetooth device. 2. After the device enters pairing mode, turn on the Bluetooth function on your computer, mobile phone, or other digital devices with Bluetooth output capability. Search for available Bluetooth devices and select I-WAVE to connect. 3. Once paired successfully, the front and rear Bluetooth LEDs will flash slowly, indicating a successful connection. You can now play music wirelessly. 4. During normal operation, to switch playback devices, disconnect the current Bluetooth device (computer, phone, etc.) first, then pair with another Bluetooth device. If connection fails, remove and reinsert the product. Package Included: 1 x 30 Pin Bluetooth Music Audio Receiver Note: Compatible only with analog speakers; digital speakers are not supported