Great features, an app that works, comes with a CPL filter for the front camera. I came from a blackvue, as I was updating the firmware because of some bugs I was experiencing, it bricked its self totally unrecoverable. No support offered, ghosted by the company. So I threw that trash out and got a Viofo A139 Pro, two actually one for each of my cars. The video quality is 10x better over my last camera. I highly recommend these.