1.Specially designed for Insta360 GO 3/3S thumb camera, which fits perfectly and seals tightly, provides ultimate protection for your camera during extreme outdoor activities, deep - water diving, surfing, snorkeling and other water sports activities 2.This solid back cover is professionally waterproof up to 40 meters, pressure - resistant and impermeable, suitable for swimming, diving, surfing, and other underwater shooting. The hard shell provides effective protection for your device in complex underwater environments 3.High - transparency lens, clear and bright. The lens is made of tempered glass material, preserving shooting images clearly. Buttons are made of 304 stainless steel material, accurately aligned with the device's buttons for a clear touch response. The sealed rubber ring prevents leakage and water ingress, with tighter sealing under greater water pressure 4.Built - in sponge strip for stable shock absorption, protecting the screen from damage caused by external forces. Equipped with a floating bar for underwater selfies with ease; matching filters for higher photographic output quality