DJI Osmo Pocket Advanced Filters The UV Protector is a lens protection filter with UV cut effect. It protects the lens from scratches and dirt. It features transparent optical glass with UV cut effect, anti-reflection & water-repellent coating. It employs a super-lightweight frame and a perfect-fit magnetic mount system that does not adversely affect the camera's gimbal performance. Recommended for bloggers and video/still image content creators who are particular about image quality. There are no noticeable scratches or stains. Thank you very much.