Compatible with 70mai A200, A510, A500S, A500, Pro, Lite & Lite2 DashCam Only (It is not suitable for any other dashcam, please do not buy if you have other model)- The CPL (Circular Polarizing Lens) is used to reduce reflections and glare from the window glass and road surfaces that can otherwise damage image quality, this works in the same way as a high end polarized sunglasses.- Helps to significantly reduce glare from the car dashboard- Improves video color saturation and picture quality- Enhances License Plate Readability due to elimination of whitish layer from the videos