Core SWX Battery Eliminator USB with Backdoor for GoPro HERO4 (10 ft)

The Core SWX DV-GP4-USBC is a power extension cable that lets you power your GoPro HERO4 from a USB power source. It comes with a clear backdoor that attaches to the rear of the camera's Standard Housing and provides rain and splash resistance (but it's not submersible). The backdoor does not prevent visibility of the rear LCD of the HERO4 Silver Edition.