1.G-sensor Function：gravitational acceleration reach 6g(1g=9.80m/s)，machine will save present video as undeletablefiles Automatic power on/off function2.Support recording Start and shutdown synchronization with Auto and save the video filesAfter connect to the car power supply3.Seamless loop recording，don’t leak second4.SOS:Short press "M" to enforce saving the current video when video recordingPackage included:1 X HD Car DVR1 X USB Cable1 X In-car charging cable1 X In-car arm stand1 X User Manual