Feature●【BETTER IMAGING】Eliminate glass and water reflections, increase saturation and contrast of photos and videos to provide better imaging.●【IMPROVE GLARE】The right number of layers of coating increases the light transmission ability of the front camera and improves the glare phenomenon.●【PROTECT LENS】Extend the life of the lens and reduce the wear and tear on the lens caused by dust and other particles.●【PROFESSIONAL SERVICES】If you encounter any problems during installation or use , Pls contact us and we will reply you asap .Product has a 1 year warranty and life-time tech support, if you have any product question, please contact us immediately.●This CPL is applicable to the front camera of WOLFBOX mirror dash cam (G840S/G850/G900/G840H).Description 【G840S+Cicular Polarizing Lens】