1ND Filter: The ND filter reduces the amount of light input, avoids overexposure, and can also resist scattered light, improve the color saturation of the image, making it more transparent and beautiful. When shooting videos, the shutter speed can be reduced by using a ND filter. 2UV Filter: The UV filter has a transmittance of up to 98.5%, which can effectively reduce the blue tone caused by ultraviolet radiation, increase transparency, and make the image quality clearer. It is also a lens protector. 3CPL Filter: The CPL filter can eliminate harmful reflections, improve image clarity, and increase color saturation, such as blue sky, white clouds, etc. It can eliminate reflection from glass or water surface. 4Coating Process: Adopting multilayer nano coating process, endowing the lens with waterproof, oil resistant, stain resistant, and scratch resistant performance. The lenses are made by a nano coating process, and the colors presented by the lenses vary under sunlight and light. 5Anti Slip Gear Design: The filter frame is equipped with knurled patterns above and below, making it easy to install and disassemble. During installation, the original lens will not be damaged, and the filter can be replaced at any time to prevent you from missing out on exciting moments. After installing the filter, it does not affect the installation and use of the waterproof shell. 6Aviation Aluminum Frame And Applicable Model: The mark is laser engraved and fadeless, and the dark gray frame prevents light leakage and ghosting. UV CPL ND lens filter kit is suitable for Osmo Action 3, adding special effects to your camera for more creativity6 x Filter 1 x Cleaning Cloth 1 x Storage Box