This easy to install 5 v, the output port to keep your smart phone, GPS, MP3 or other doo-dad blocked it with a waterproof cover elements. And quick installation instructions you can not live without, allegations and on the road when you're ready . Are two USB auxiliary sleeve is ideal for driving and / or iPod / MP3 player, USB charging portable devices, GPS, iPhone, And other similar devices. There are two auxiliary USB power plug socket for the added convenience, The unit can be connected to any 12 volt DC electrical system. Product weight: 170g Product color: black Dimensions: 6cm * 3.7cm Faucet bracket width: 4.6cm Fastening bracket diameter: 6.7cm Output voltage: 5V Input current: 2.1A Product length: 195cm Installation: suitable to be installed on faucet handle for fixed installation, motorcycle 20-30MM diameter suitable for the installation of this product. Wiring: red power positive, black line to supply cathode (or take the iron). Show More