Features: Accurate Inclinometer: Measures slope, inclination, and degree of downhill and uphill for vehicles. Real-time Display of Vehicle Driving Data: Shows vehicle speed in Km/h or MPH, clock, altitude, single driving time, single mileage, driving direction, number of satellites searched, acceleration test, and brake test. Supports speeding alarm. Sensitive Light Sensor: Features a high-resolution color HD LCD display that automatically adjusts screen brightness based on ambient light conditions, improving visibility. Built-in backlight activates when powered, ensuring clear visibility in low-light or nighttime conditions. Wide Range of Applications: Compatible with cars, SUVs, commercial vehicles, and new energy vehicles. Specifications: Model: GP11 Color: Black Material: ABS + PC Screen Type: LCD Screen Size: 1.8 inch Working Voltage: 5V-18Vdc Supported Languages: English Product Size: 6.55 x 6.5 x 6.3 cm Package Size: 10 x 7.5 x 7.5 cm Package Weight: 140 g Packing List: 1 x GP11 Host 1 x USB Cable 1 x User Manual