Shell material: high transparency and corrosion-resistant PC/Germany Bayer 2805   Waterproof/Usage: 40 meters (extreme)/The waterproof shell adopts symmetrical locks, the structure and performance are very reliable, the shell body is thicker and more sturdy and not easy to deform. The camera is scratched and scratched.   Lens material: Optical imaging tempered glass is used, and the transmittance of the lens material is close to 92%. The AR extra-projection film is coated to make the lens transmittance reach more than 98%. The beads do not remain on the lens surface and affect the shooting effect.   Color: transparent   Button material: stainless steel   Waterproof ring material: silicone   Material: High hardness 304 stainless steel   Product weight: 165g Total product weight (including box): 320g   Product size: length 175* width 75* height 35mm   Outsourcing size: length 206* width 113* height 76mm   Packing: Cardboard box packing list: waterproof shell invisible base screw anti-fog sheet