We have a courier route on Sundays that takes about 10 hours and 300 miles. FINALLY got a dash cam as protection against "he said vs he said". Wanted front and rear, but didn't want to spend that much, so we bought 2 one direction dash cams. The picture is very clear, and the sound is as well (we haven't tested how well it picks up sounds from outside the car). It has a continuously updated: date/time stamp, speed, and gps coordinates. If you exceed SD card capacity, it will just loop, recording over the oldest recordings. (We bought 256GB cards, and one day (~9hrs of driving) doesn't even come close to filling it.) If you crash, or get hit while parked, it will record 5 battery minutes of video (longer if the car is still running) and protect it in a separate file so that it will not be recorded over. Must be plugged in to operate. (comes with both a 3ft and 8ft USB cords). Shuts off and starts up with the engine. Theoretically connects to the phone app via wifi, but I found this difficult to accomplish. Consequently, a bit of trial and error to get the rear camera pointing where it needed to be. But I absolutely recommend this camera to anyone wanting a relatively inexpensive dash cam. It works great, and is a great value.