1The audio system supports answering calls and can be controlled through a mobile phone app. 2. It has anti-slip and waterproof functions. 3. Supports USB playback and memory card playback, and can play mp3 format songs and radio stations. 4. The system supports power-off memory function and is equipped with LED screen for information display. The 5 speakers adopt an integrated design and have an LED light bar on the back of the machine. Features: The audio system supports answering calls and can be controlled via a mobile app. It has anti-slip and fall-resistant functions. Supports USB playback and memory card playback, and can play mp3 format songs and radios. The system supports power-off memory function and is equipped with LED screen information display. The speaker adopts an integrated design, and there is an LED light strip on the back of the machine. Specifications: Color: black/gold/silver (optional) Wiring diagram: Red connects to the positive terminal of the battery, black connects to the ignition control Green to the negative terminal of the battery Waterproof: Level 4 waterproof ( Splashproof), it will not be damaged by water splashing from any direction. (PS: If the waterproof cover is not put on, the waterproof effect cannot be achieved. If it rains, do not stay in the rain for a long time, it may cause damage) Output power: 2x10W 6ohm Rated voltage: DC12V Output frequency range: 20Hz~20KHz Operating temperature : -30~+60 Control distance compatible with Bluetooth>=6m Mobile phone charging current: 800mA Standby mode current: 15mA Length (excluding bracket): 205mm / 8.07in Length (including bracket): 310mm / 12.2in Diameter: 60mm / 2.36in Suitable for handlebar distance 25~28cm, diameter 2~2.2cm Packing list: 1 x 1 set of audio system installation accessories