1、Optical Glass Construction: This filter set is crafted from optical glass with accurate grinding and polishing for high definition imaging, ensuring that every shot retains outstanding clarity. Designed for easy attachment and removal without damaging the original lens. You can quickly switch filters to seize every exciting moment. 2、Advanced Multi Layer Nano Coating: The filters feature a multi layer nano coating process that provides good water resistant, oil resistant, grime resistant, and scratch resistant properties. The lenses are made by nano coating process, and the color presented by the lenses is different under sunlight and light. 3、UV Filter: The UV filter effectively reduces unwanted blue and blue gray tints caused by UV light, increasing light transmission for clearer image quality. It also serves as a lens protector. 4、CPL Filter: It eliminates harmful glare and reflections, improving image clarity and enhancing color saturation, particularly in bright conditions with blue skies and white clouds, as well as on glass and water surfaces. 5、ND Filter: The ND filter reduces light entering the lens to prevent overexposure. It also helps counteract scattering light, enhancing color saturation and achieving vibrant images. When filming videos, it allows for lower shutter speeds for smooth motion recording.Item Type: Action Camera Filters SetMaterial: Aluminum Alloy, Optical GlassApplicable Model: For ACTION 3, 4, 5pro Action CameraMounting: Direct Mount Item Type: Action Camera Filters SetMaterial: Aluminum Alloy, Optical GlassApplicable Model: For ACTION 3, 4, 5pro Action CameraMounting: Direct Mount 1 x UV Filter1 x CPL Filter1 x ND16 Filter1 x Storage Box1 x Cleaning Cloth