OPTICAL GLASS: Utilizing professional grade glass, our filter guarantees high definition image quality while offering scratch resistance, waterproofing, and oil resistance. DUAL SIDED MULTI LAYER COATING: By reducing internal lens reflections, our filters produce clear and exceptional image quality with accurate color reproduction. NEUTRAL DENSITY: The ND filter reduces the amount of light entering the lens, preventing overexposure and creating dynamic effects such as silky water and motion blur. ENGRAVED DESIGN: Ensures a comfortable and non slip grip when installing or removing the lens filter, enhancing your shooting experience. WATERPROOF AND ANTI FOG: The built in sealing ring effectively isolates water droplets and vapor, allowing you to shoot worry free footage in underwater, rainy, humid, and low temperature conditions.