The built in GPS signal receiver can be used to keep track of your vehicle's physical location as you drive and also keep track of your speed. When you are playing back your video footage on your computer or laptop, you will also be watching a simultaneous Google (or similar) map view showing your vehicle moving around, and how fast it was going.

Powered from your car lighter port that will auto turn on and off your camera when your car is on or not. There is also a 300mAh built-in lithium battery that gives you about 10 minutes of recording time with the option of having it continue to record or shut down upon leaving your car.
 
The Auto loop video recording overwrites older, unlocked videos with the latest videos . The Accident Auto Detection G-sensor feature will auto lock your current video file when a collision is detected protecting the file from being overwritten. It records both audio and video with a time & date stamp which can be used to pinpoint exactly what happen when the event occurred. The Geeko Car Dash Cam DVR supports MicroSD Flash Memory up to 64GB that can be purchased separately which is required to operate recording function of this unit