Built-in rubber ring - waterproof and anti-fogging Double-sided multi-layer coating-high definition imaging Thick glass - protection upgrade Transparent imaging - no dark corners when shooting Equipped with a disassembly and assembly wrench knob for more reliable installation Use the same fixing method as the original lens, use the matching wrench, unscrew the original protective lens, and then screw to install the Amai filter. The waterproof, anti-fog, and anti-fall performance can be guaranteed to extent. Product parameters Product Name: For Insta360 Ace Pro / Ace Waterproof Filter Compatible products:For Insta360 Ace Pro / Ace Material:ABS+glass Dimensions:35.3 × 35.3 × 7.2 (mm³) Weight: 8g