I purchased this Garmin Dash Cam Mini last December and being on sale for $79 bucks, I couldn't pass it up. A couple of months back I ordered several extra mounts for it so that I could pop it on and off from vehicle to vehicle. It automatically starts to record when you start the vehicle, and it stops when you shut the vehicle off. Its controlled from an app on your phone and it actually works pretty good. You can review, download, or save videos and access all settings from the app. It senses if you're in an accident and automatically saves the video so that it doesn't get written over. It also saves the first 30 seconds and last 30 seconds before and after the accident.
It has a picture taking function (button on the back side) if you want to take a snapshot of something, or you could do it from the app. I use a 64 gig micro SD in it and it gives me about 4 or 5 hours of video before it starts to loop over and re-write. It can run longer if you lower the resolution to something like 720P. It measures 2" x 1-1/4". This is a video that I did of it.
It has a picture taking function (button on the back side) if you want to take a snapshot of something, or you could do it from the app. I use a 64 gig micro SD in it and it gives me about 4 or 5 hours of video before it starts to loop over and re-write. It can run longer if you lower the resolution to something like 720P. It measures 2" x 1-1/4". This is a video that I did of it.