The CPL filter is used for VIOFO A129 Duo / A119 / A119PRO / A119S dash camera, suitable for A129 DUO both front and rear lenses.
Protect camera lens from finger prints, scratches and dirt destroying.
Reduce reflections and glareReduce reflections and glare from glass, metals or shiny surfaces that would damage image quality, this works in the same way as polarized sunglasses.
Make colors more saturated
It can be used during day time and at night. Warranty: One year