Similar to the regular GoPro camera housing, but it has open side panels that provide access to the cameras connection points. It can be used for live-feed video, charging while recording, keeping the camera cool during shoots and more. Its also the GoPro camera housing best suited to capture enhanced audio if youre recording at low speeds where wind wont be an issue. Not waterproof. Internal size: H4.5, W15.5, D20.8cm.