For Original 70 Mai Dash Cam A800s Cpl Polarizing Or Rc06 Rear Camera Cpl Filter For 70mai A800 Accessory Set Static Sticker - Static Paste - AliExpress
Get yourselves a polarizing filter. It's not earth shattering, but for $20 you can significantly improve your picture. : r/Dashcam
VIOFO A1CPL Polarizing Filter for A118/A119/A129 Front Or Rear Cameras
VIOFO CPL Filter Anti-Glare Circular Polarizing Lens for A139 /T130