1. Waterproof protection up to a depth of 40 meters, suitable for swimming, diving, surfing and other underwater photography, 2. Effective waterproof and anti-pressure when shooting, with camera control buttons on the outside, 3. Dual connection port design, meet different shooting needs for connection, can expand other adapters, 4. high-quality and high-transparency PC material, anti-pressure and explosion-proof, 90% light transmittance, restore the clarity of the camera, 5. high sealing design, airtight and non-leakage, effectively prevent the machine from water and damage, 6. and PTZ camera body just the right blend, harmonization and beautiful, and easy to install, 7. Anti-fog sheet can effectively prevent fogging, so as not to affect the shooting.