GPS MULTI-FUNCTION INSTRUMENT: This GPS system multi-functional instrument can measure the slope and inclination of the off-road vehicle, provide vehicle speed, height and vehicle direction, and has a high- satellite real-time clock function. The main function: Vehicle Roll Angle, Vehicle Pitch Angle, Coordinates Display, Satellite Speed, Altitude Display, Speed Display, Supply Voltage, Breathing Light Button, Clock, Driving Distance, Number of Positioning Satellites, Automatic Light Sensor, Tilt Angle Danger Alarm,Pitch Angle Hazard Alarm,Overspeed Alarm