for insta-360 X5 fully invisible diving shell Function: 360-degree fully invisible, blind spots eliminated, waterproof 50 meters Material: PC and high-definition optical glass 1: The lens material is PMMA, with a transmittance of 95 percent . After for anti-reflection film coating, the transmittance can reach 98 percent , AS waterproof and anti-fingerprint film, AS hard film, appearance hardness of 5H, comparable to the hardness of ordinary glass, scratch-resistant, so that you can take photos with one lens in hand without worry 2: The shell is made of hardened PC, with 10-grade fine lines inside and outside, making the product scratch-resistant and textured, 3. Upgraded 360anddeg fully invisible Blind spots are completely eliminated The new fully invisible waterproof shell can be 360anddeg invisible above and below the water Material for anti-stain and anti-fingerprint buttons: stainless steel Material for waterproof ring: amorphous high-activity silicone Material for connecting shaft between the main body and the back cover: high-hardness 304 stainless steel Package Content: 1xWaterproof Case