For Insta360 Ace Pro PULUZ 60m Underwater Waterproof Housing Case with Base Adapter and Screw (Transparent)Features1. Waterproof to 60 meters, the case comes with a cold shoe opening to support expansion of fill light and microphone equipment. 2. High transparency: The optical tempered glass lens has excellent light transmittance, with the light transmittance close to , making the picture quality clear and bright. 3. Enhanced hardness: Through surface hardening (AS) treatment, the hardness of the product is improved and the impact of scratches and collisions on the lens is reduced. 4. Anti-reflective coating: Coated with anti-reflective (AR) coating, it effectively reduces reflection and diffuse reflection, improves transparency and picture clarity, and reduces light loss. 5. Thin and light design: Ultra-thin design, light and easy to carry. 6. Durability: After rigorous testing, optical tempered glass lenses have good durability and can be used for a long time without failure. 7. Versatility: Optical tempered glass lenses not only provide protection, but are also dustproof, anti-fingerprint and anti-scratch, keeping the lens clean and clear.Specifications1. Shell material: PC and optical tempered glass lens 2. Button material: Aluminum alloy 3. Spring material: 304 stainless steel 4. Waterproof ring material: Amorphous highly active silica gel 5. Waterproof depth: 60 meters