Keep your GoPro camera charged and max out your recording timeeven when you're in the middle of the actionwith the Contacto Magnetic Door and Power Cable Kit. It lets you skip battery changes while you're on the road or trail and stay powered through activities, long sporting events and time-lapse shots. Simply install the door on your camera and connect the power cable to the door, then plug into any USB-C power source to juice up. Your battery doesn't even have to be installed. The door is also waterproof to 10 m, so you don't have to re-install your original door when shooting under water.