Characteristics: Accurate inclinometer: it can measure the slope and slope, degree of descent and climb of vehicles. Real-time display of vehicle driving data: vehicle speed (km / h or MPH), clock, altitude, single driving time, single mileage, driving direction, star number search, acceleration test and brake test. Supports overspeed alarm. Sensitive light sensor: adopt high definition HD color LCD display, adjust the screen brightness through the sensitivity of the light sensor to greatly improve visibility. When plugged in, the inside will be illuminated, allowing you to see accurately at night or in the dark. Wide range of applications: Suitable for cars, SUVs, commercial vehicles, new energy vehicles and so on. Technical data: Model: GP11 Black colour Material: ABS + PC Screen type: LCD Screen size: 1.8 inch Working voltage: 5V-18V DC Support language: Chinese, English, Japanese, Korean, Thai Product size: 6.55 * 6.5 * 6.3cm Package size: 10 * 7.5 * 7.5cm Package weight: 140g Packing List: 1 * GP11 1 * USB cable 1 * User Manual