The adhesive is good quality Does not stick.
The plastic est Relatively good quality.
Slightly Reduced Visibility is (brightness).
It gets messy with the Slightest amount of oil (qui is a nightmare for someone like me with oily skin)
the ones I have HAD Gave before a live of more than 4-5 Service Mountains.
I clean it once a week to keep grease and dust accumulation, and it works just fine.