for DDPAI Dash Cam Z50 Pro HD Lens Dust Protection Anti Glare CPL Filter Natural High quality skinny optical Glass, Diameter, Polarizing coefficient 99% the reflection from brilliant surfaces such as, Dashboard reflection, Water surface, Glass, Road glare but in addition letting the natural coloration come via e of the light coming from the sky also is polarized to provide a extra dramatic sky & larger contrast clouds, rendering outdoor scenes with crisper & deeper colors Warranty: Due to the item is made in Glass and straightforward to interrupt throughout shipping, we request buyer touch us within three days after you signal (From the signal date on website) Over 3 days, we DO NOT take any responsible Features: gold Circular Polarizer Glass Reduces Glare Improves Video Quality Easy to Install Material: superb aluminum alloy mirror ring HD Lens Dust Protection Anti Glare CPL Filter Eliminate reflective CPL Material: Optical glass Applicable models:DDPAI Dash Cam Z50 Pro Packing accessories:1X field packing1x CPL Filter Note: No entails cameras An elective CPL(Cirular polarizing lens)can be used to reduce reflections and glare that might otherwise foul up your image quality(OPtional)