Accessory · Glare control
CPL Filter for 70mai Dash Cams
A cheap upgrade with a real impact. This model-specific CPL is designed to cut dashboard reflection off your windshield, helping footage stay clearer on bright days instead of washing out — and it is cut to fit 70mai cameras exactly.
Product info updated August 2026
Our review
Best for: Owners of a compatible 70mai model who get dashboard glare in daytime footage.
Consider something else if: You do not own a compatible 70mai model — per specs, it fits A810/M500/X800/A510/A500S/A800/A800S only.
On sunny days your dashboard reflects up into the windshield, and that glare lands right in your footage. A circular polarizing filter blocks that polarized light for noticeably clearer daytime video, cutting reflections from sunlight, wet roads, and other vehicles.
What makes this one worth picking over a generic filter is fit: it is engineered specifically for 70mai models (A810, M500, X800, A510, A500S, A800, A800S), with a silicone-grip inner ring that locks onto the lens without scratching it and an aluminum-alloy frame built to tolerate cabin heat. The multi-coated optical glass is intended to keep 4K footage sharp, and once fitted it needs a one-time rotation to dial in the angle that reduces glare the most.
The specifications above come from the manufacturer's published product documentation. The verdict and assessment are RoadLens' own editorial analysis based on those specifications — see how we choose for the framework we use.
Frequently asked questions
Which cameras does this fit?
It is designed for 70mai models including the A810, M500, X800, A510, A500S, A800, and A800S.
What does a CPL filter do?
It blocks polarized light from your windshield, cutting dashboard reflections and glare for clearer daytime footage.
Do I need to set it up?
Fit it over the lens and give it a one-time rotation to the angle that removes the most glare.