Features: Accurate Inclinometer: It can measure the slope & inclination, the degree of downhill & uphill of vehicles. Real-time Display of Vehicle Driving Data: vehicle speed(Km/h or MPH), clock, altitude, single driving time, single mileage, driving direction, searching star number, acceleration test and brake test. Supports speeding alarm. Sensitive Light Sensor: Adopt high-resolution color HD LCD display, adjust the brightness of the screen by using the sensitivity of the light sensor for improving visibility greatly. There will be backlight inside after connected to power supply, which will help you see accurately in case of night or dark situation. Wide Range of Applications: It fits for cars, SUV, commercial vehicles, new energy vehicles and so on. Specifications: Model: GP11 Color: Black Material: ABS + PC Screen type: LCD Screen size: 1.8 inch Working voltage: 5V-18Vdc Support language: Chinese, English, Japanese, Korean, Thai Prodcut size: 6.55 * 6.5 * 6.3cm Package size: 10 * 7.5 * 7.5cm Package weight: 140g Packing List: 1 * GP11 Host 1 * USB Cable 1 * User Manual