Upgrade Version I-WAVE 30 Pin Bluetooth 5.1 Audio Receiver A2DP Music Mini Wireless Adapter for iPhone iPod Jack Analog Speaker Supports Bluetooth 5.1 protocol specification Supports device authentication Supports automatic identification of certified and non-certified base audio Transmission distance: not less than 10 meters Interface: standard iPod 30-pin interface Dimensions: 44*36*7mm Two indicator lights flash alternately when there is no connection; blue light flashes slowly after connection 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 the device is working normally. Since the device is factory defaulted 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, search for available devices, and select the I-WAVE Bluetooth device to connect. 3. After successful pairing, the front and rear Bluetooth LEDs will flash slowly, indicating a successful connection. You can now play music wirelessly. 4. During normal operation, if you want to switch playback devices, disconnect the current Bluetooth device (e.g., computer or mobile phone), then pair and connect with another Bluetooth device. If connection fails, remove and reinsert the product. Note: Only compatible with analog speakers. Not compatible with digital speakers. This item is not compatible with car stereo systems. If the product does not work with your speaker upon receipt, it may be due to incompatibility and not a quality issue. Please verify compatibility before purchase.