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. Has the following functions: anti-slip, waterproof. Supports USB playback and memory card playback, and can play mp3 format songs and radio stations. The system supports power-off memory function and is equipped with LED screen information display. The speaker adopts LED light strip integrated design specifications: Color: black/gold/silver (optional) Wiring diagram: Red to the positive terminal of the battery, black to the ignition control, green to the negative terminal of the battery Waterproof: Level 4 waterproof (splash-proof) will not change in any direction Damaged by water splash. (PS: If you do not cover the waterproof cover, the waterproof effect will not 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 working Temperature: -30~+60 Control distance compatible with Bluetooth >= 6m Mobile phone charging current: 800mA Standby mode current: 15mA Length (without stand): 205mm / 8.07in Length (with stand): 310mm / 12.2 inches Diameter: 60mm / 2.36 inches suitable for handlebar distance 25~28 cm, diameter 2~2.2 cm Packing list: 1 x audio system 1 set of installation accessories