It is very easy and looks like the oem. You can adopt this idea with other dash cams with protruding lens.
so let's start. lens in 0801s is small. the smallest cpl I have found was 24mm- still too big for 0801s. BUT it has a metal ring inside it. All You need to do is go to a store and buy flexible magnet tape. yes, it is weak magnet, but trust me- it will work, and cpl won't move, or fall off even when You shake it. I bought 1.5mm. when I stuck it around the lens, it turned out it was too thick. so I cut thin stripes and put them around the lens. and that's all!
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windshield was dirty, dots are not reflections from the inside of my car 😉
so let's start. lens in 0801s is small. the smallest cpl I have found was 24mm- still too big for 0801s. BUT it has a metal ring inside it. All You need to do is go to a store and buy flexible magnet tape. yes, it is weak magnet, but trust me- it will work, and cpl won't move, or fall off even when You shake it. I bought 1.5mm. when I stuck it around the lens, it turned out it was too thick. so I cut thin stripes and put them around the lens. and that's all!
.