Features: Special designed for SJCAM SJ8Series Sports Camera. Efficient waterproof & scratch-resistant performance(multi layers of coating film). Light weight, snap on design, won't affect camera self-inspection. Compatible with: SJCAM SJ8 PRO/SJCAM SJ8 AIR/SJCAM SJ8+ MCUV (Ultraviolet) Filter Reduce haze and improve contrast to your video and digital images by minimizing the amount of ultraviolet (UV) light.Especially useful in areas of high altitude, snow, or beach, eliminating the undesirable blue cast.Imported optical glass, top level of transmittance. CPL (Circular Polarizer) Filter Removes unwanted reflections from non-metallic surfaces such as water or glass and glare from the sun.Increases color saturation, creating deep, rich scenic images.Helps to reduce the amount of light entering the lens.Especially useful in reflective or stray light. IF YOU HAVE ANY QUESTION, PLEASE CONTACT US, WE WILL SOLVE IT FOU YOU AS SOON AS POSSIBLE.