【Compatible with GoPro 9 10 11 12 13】 This variable ND filter is compatible with GoPro 9 10 11 12 13. It helps you easily handle various outdoor light conditions, from overcast to bright sunny days, and control the amount of light that enters your camera lens to avoid overexposure 【Variable & Precise Light Control】 Hard stops at both ends limit neutral density between ND32 and ND512 (5 and 9 stops). Simply rotate to the exact marked stop to achieve desired light reduction level for accurate exposure control and capture moving subjects with expressive motion blur effects 【Quick & Secure Attachment】 This filter quickly threads onto the camera and stays firmly in place during any sport activity, whether it is surfing, hiking, mountain climbing, or biking 【Multicoated HD Optical Glass】 Multiple oleophobic and scratch resistant coatings on both sides of the HD optical glass ensure excellent optical performance and effortless daily cleaning 【Slim Aluminum Alloy Frame】 Precision CNC machined aluminum alloy frame is lightweight yet robust, ideal for outdoor photography and videography on the move Note: Lens 、CPL &ND/PL Filter though the filter features a waterproof coating, the entire action camera cannot be used underwater Note: Lens CPL & ND/PL Filter though the filter features a waterproof coating, the entire action camera cannot be used underwater.