Our new 4X4ALTIMETER on-dash integrated information display is a perfect match for any adventure on harsh and uneven terrain, providing data on the orientation of the vehicle (pitch angle, roll angle) as well as its speed. The bright display features an electronic compass for navigation and a light sensor to automatically adjust the device's back-light in line with the brightness outside. Since the altimeter connects via GPS, its speed, location and time measurements are far more accurate than could be achieved with the OEM vehicle read-outs and provide the driver with the information they need on any excursion. Features & Benefits " Pitch Angle: -40 Degrees ~ +40 Degrees " Roll Angle: -40 Degrees ~ +40 Degrees " Temp. Accuracy: +/- 1 Degree C " Voltage Measurement Range: DC 5-30V " Speed Precision: < 0.36Km/h " Operating Temp: -40 Degrees ~ +80 Degrees " Power Supply: DC 10V ~ 30V