Motorcycle Waterproof Dual USB Phone ChargerMaterial: Plastic + MetalSize: 8x4x3.2cmWire Length: Total around 1.5mInput Volt:12-24VOutput Volt:5VOutput Current:2.1A ， 1AConnecting : Its able to connect with storage battery. Red wire connect to Positive pole，Black wire to negative pole.Its easy to install. Package Including : 1 set Waterproof USB Phone Charger