Designed for Hero9 Blackadopted integration design, waterproof shell and dome integrated into one unique design, which prevents the possibility of water leakage, waterproof up to 30m, used with Hero9 . Excellent Water Rejection Under/UnderwaterBy moving the waterline away from the lens, it is possible to capture images above and under water at the same time. The wide-angle lens helps you take immersive photos. Ensure Service LifeNew waterproof shell design, 35mm thick case body and 5mm thick waterproof buckle, easy to open but not easy to break; easy to squeeze trigger that allows you to operate your device photo directly with one hand, release another hand underwater, control your camera as you like. Well-Made Dome LensMade of quality polycarbonate + acrylic, highly transparent material to provide high visibility and capture vivid images over/under water. Pre-set waterproof line, drawing the waterline away from the lens to capture both above and underwater images simultaneously.