1、FOR ACTION 4 CAMERA: The filter is compatible with for DJI Osmo Action 4,HD glass, which ensures clear imaging during outdoor high strength sports photography, perfect for surfing, snorkeling, kayaking, skiing, mountain biking, skydiving, skateboarding, and a range of other sports scenarios. 2、BALANCED EXPOSURE: The action camera lens filter provides precise exposure control during dynamic outdoor activities, preventing overexposure and improving image quality in a variety of sunny conditions. 3、VIBRANT COLOR REPRODUCTION: The filter adds vibrancy to your sports footage or travel video blog by helping to reduce flare and reflections from non metallic surfaces such as water, glass, and windows, enhancing colors and boosting contrast for sharper, more attractive footage. 4、MULTILAYER COATING: The camera lens filter replacement's high definition optical glass features 30 layers of multi functional nano coating on both sides, making it water, scratch, and oi resistance. 5、LIGHTWEIGHT AND ULTRA THIN FRAME: The camera lens filter is made with meticulous CNC craftsmanship and an ultra thin aluminum frame that is lightweight, fits seamlessly into the lens for easy mounting and dismounting, and has a sturdy construction that ensures stability even during strenuous movement.