For GoPro Hero11 Black HERO10 Black HERO9 Black TELESIN Waterproof Case Full Scene Anti-Fog Underwater Diving Housing 1. Protective case combination, 45M waterproof upgrade, all-scenario hydrophobic coating. 2. Explore the 45M deep sea without fear of pressure, built-in high elastic waterproof sealing strip, strong pressure impervious to water. 3. Adopt toughened glass with 95% light transmittance to show true colors 4. A waterproof coating is added to the front of the lens, which will not hang or get wet to ensure that the shooting will not be blurred 5. For non-diving use, replace the hollowed-out back cover for a wider range of scenarios (the hollowed-out back cover is suitable for water sports or land activities with lower waterproof requirements, please replace the sealed back door for diving below 10 meters) 6. Made of high-strength PC, effectively resists drops, scratches and punctures. 7. The button is made of 316 stainless steel, with precise alignment and obvious tactile feedback 8. With 9 pieces of anti-fog film, which can effectively prevent the problem of fogging due to temperature difference. Specification: 1. Product size: 78.6 x 78.6 x 40mm 2. Weight: waterproof case 89g, hollow back cover 16.9g 3. Product material: environmentally friendly PC, 316 stainless steel, high-transparency tempered glass Packing list: Box x 1 Instructions for use x 1 Waterproof case x 1 Hollow Back Door x 1 Locking screw x 1 Activity Base x 1 3 packs of anti-fog sheets (total of 9 sheets)