Wealpe Open Side Skeleton Housing with Skeleton Backdoor Compatible with GoPro Hero4 Black, Hero4 Silver, Hero3+ Cameras The skeleton housing open side feature makes it easy to plus access to the camera's micro SD, Micro HDMI and USB ports for adding external microphone, easy data offload, live-feed video and charging. Open side feature keeps the camera cool better than a standard housing during shoots and more, it's very helpful for a long time use to reduce a lot of heat that camera puts out. Front flat glass lens delivers maximum image sharpness. The side cutout with humanity design makes it's convenient to swap out side door quickly without having to remove the housing. Adding recording hole on the top of housing will capture the audio better during low-speed activities. Compatible with Gopro hero 4 black, hero 4 silver, hero 3+ (hero 4 silver we recommend ASIN: B01GL5MG68). For use in dry environments only.