Features: Designed for Gopro 4 / 3+/ 3, suitable for underwater photography. Made of high quality PC material and aluminum alloy, lightweight and durable. Semicircular design to move the waterline from the camera lens, provides a unique view for you. Comes with waterproof membrane, waterproof up to 30m submerged, more professional. The dome port equips with a waterproof case for GoPro 4/3+/3, not requiring any other accessories, and you can easily see what you are recording from the screen. Supplied with a aluminum alloy wrench for you to fix the floaty grip on the dome port, and a cleaning cloth to clean it.