Compatible With Many Models: Suitable for 9 10 11 Sports Cameras, bringing a good user experience. Ultra Light Frame: Aviation aluminum frame material, no impact on the shooting, fastening durable corrosion resistance, long service life, black matte surface frame, to prevent light leakage ghosting; optical glass lens, precision grinding and polishing, high definition imaging. UV Filter: UV filter can effectively reduce the blue tint caused by ultraviolet light, increase the light transmission, so that the picture quality is clearer, but also a lens protection filter. Multi Layer Nano Coating: The multi layer nano coating process gives the lens prime waterproof, oil proof, , and scratch proof performance to protect your lens. Anti Slip Gear Fesign: The top and bottom of the frame is equipped with knurling pattern, easy to install and remove. Installed without damaging the original lens, replace the filter at any time, so you do not miss the wonderful moment. After the installation of filters will not affect the waterproof case installation and use.