1. Size: 120*85*70mm 2. Voltage: 10.5-15V 3. Maximum output power: 15W*2 4. Waterproof and dustproof: IP65 5. Support FM radio to facilitate cyclists 6. Support Bluetooth music, free connection within 10 meters 7. Support TF memory card slot, WAV/MP3/WMA format, etc. 8. Equipped with External USB
