This dash cam is amazing! I don't know how they got so much functionality in such a small package. 1080p and a GPS and HDMI output are just a few of the features. The Instruction book has a steep learning curve, but a careful reading and a little experimentation go a long way to understand the many options. For instance, you can have the camera continue to record for an additional 5 minutes after the power is shut off. This is useful for when you run into the 7-11 for coffee and come right out. You can see if anyone approached your car in the meantime. Recording time can be extended to days by using a 32gig (micro SD card) and lowering the resolution, which is still very good. They even give you an extra long cord for the cigarette lighter so you can easily route it up and out of sight. Another neat feature is that you can easily detach it from the GPS module and use it as a handheld for up to 20 minutes.