Best Brand Motorcycle 12V-24V Waterproof USB Phone Charger Adapter Double USB2.1A 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.