RageCams Underwater USB Powered Battery Eliminator - Waterproof Back Door for GoPro Hero4 & Hero3+ Cameras (Standard Slim HOUSING) Underwater USB Housing Back Door that eliminates the use of an actual battery Hero3+ Black - Hero3+ Silver - Hero4 Black - Hero4 Silver Must have the 'Standard Housing' that does NOT have the screws on the front Keeps camera at a cooler temperature while recording Includes RageCams Decal