Had this product for a few months, the resolution is not HD, but excellent enough for capturing what is ahead. I Have already caught a few small road incidence by other vehicles, to show My wife what idiot drives do. Now I'm going to purchase a second one for the 2nd vehicle. Google Dash Cam, and check out what other folks caught. Lots of idiots on the road, gets down to He said She Said deal, so basically this is insurance for your insurance, and piece of mind. The reason for 4, Night vision can be improved.