BlackVue BF-1 CPL filter for the front cameras of BlackVue DR750S/DR750X and DR900S/DR900X 1CH and 2CH models to protect the lens from harmful radiation and eliminate distracting reflections in the image. The CPL filter works for the dashcam like Polaroid glasses for the eyes. The lens is protected against UV radiation and bright light. Also, distracting reflections in the image are largely eliminated by using this CPL filter. Ideally suited for filming in sunny conditions.