Rexing Ultra-Slim CPL Circular Polarizer Filter for R4 Dash Cam home security Supports all OBDII protocols including

Supports all OBDII protocols including CAN

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The sturdy metal ring ensures over 3000 plug-and-pull cycles

Rexing Ultra-Slim CPL Circular Polarizer Filter for R4 Dash Cam home security Supports all OBDII protocols includingReduce Glare Reduce Reflection Enhance Contrast Compatibility This CPL filter is used for Rexing R4 dash cam. Note: It doesn't work for other Rexing dash cams. Usage It can effectively reduce reflections, enhance contrast and boost saturation while retaining neutral color rendition in all your shots. Simple Installation Aluminum alloy CNC non slip design, easy to install and remove the filter. Super slim rim profile significantly avoids vignettes on