With the GPS on the Nextbase and using the nextbase app to show videos ( video is a bit jerky' in NB app ) you get a map showing the position of vehicle during the video clip, the vehicle tracks along whatever roads you were traveling on also get speed and 3 axis G force readout. I prefer to look at videos in something like VLC media player for smooth viewing and good resolution, but you lose the map and other info. My screen on satnav defaults to show GPS speed, but can also show time ( accurate to 1 billionth of a second as measured by the atomic clock in GPS satellites, but readout is only 4 digits LOL ).