Keep your smartphone, GPS and/or MP3 charged while enjoying your ride. Water- and weather-resistant, the BikeMaster Dual USB Port/Plug Charger offers you 5-Volt/2-Amp dual USB ports that have an inline fuse for protection. It comes with 38" of wire and 12" long battery quick connect rings. The mounting bracket that is included fits 7/8" and 1" bars.