This is a USB to AV Video FPV cable specially for Gopor Hero 3. It not only has the Video and Audio output from the camera's USB port, but also 5V power DC(BEC) Input to power up your GoPro Hero 3. So you can run your Gopro Hero 3 as you like. Also with this cable, You you don't need an internal battery for your GoPro Camera.
Super small and light
Plug and Play.
Device Type: Gopro Hero 3 FPV Cable
Interface Type: Mini USB
Cable Length: 20cm