Features: Transparent design , easy to observe and take high defination pictures. The thickened shell is more solid and not easy to deform. It can not only dive, but also protect your camera and lens from scratches. Waterproof for 40meters, the waterproof shell adopts symmetrical lock catch, and the structural performance is very reliable Lens material: optical imaging toughened glass is used, and the transmissivity of the lens material is close to 92%. After coating AR, the transmissivity of the lens is increased to more than 98%. After coating, the waterproof film is coated, and the water drop angle is up to 115 degrees, to ensure that no water drops remain on the lens surface and affect the shooting effect. Specifications: Product Name: for Insta360 X3 Waterproof Cover Color: Transparent Shell Material: High Permeability Corrosion Resistant PC Button Material: Silicone Waterproof Ring Material: High Activity Silicone Material of Connecting Shaft between Main Body and Rear Cover: High Hardness 304 Stainless Steel Product weight: 110g Product size: approx L155xW70xH52mm/6.1x2.75x2.05in Package Includes: 1PC Waterproof Shell 1PC Invisible Base 1PC Screw 1PC Anti Fog Piece note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you