Suitable for all cars, vessels, boats, and yachts. The signal comes directly from the satellite signal receiver (GPS Speed Sensor). The gauge offers high precision, quick location confirmation, and short startup time. IP67 rated for waterproof and dustproof performance. Stepper motors provide full-range operation with low power consumption, extended lifespan, and high accuracy. Features curved glass with anti-fogging function. Ultra-wide working voltage design: long-term operating voltage 9-32V DC, maximum up to 36V for less than or equal to 1 minute. Fixing dimension: 85mm (3-3/8 inches). Indicating range: 0-160MPH / 0-200KM/H. Working voltage: 9-32V DC (compatible with 12V and 24V systems). Seven backlight colors: red, green, blue, white, yellow, cyan (automatic switching). Functions: 1. COG displays the navigation course and orientation. 2. Trip meter shows short-trip mileage with power-failure memory. Long press the button to reset. Total mileage is also displayed and saved during power failure. 3. Displays total accumulated mileage that does not reset when powered off. 4. OLED LCD display with operating temperature range from -40°C to +80°C. Wiring connections: Red: 9-32V DC (+) Black: Ground (-) Blue: Connect to button to reset trip mileage Yellow: Backlight (+) Note: Product design may vary slightly between batches. Differences in color or appearance do not affect functionality. Type: 0-200KM/H Color: B – Black background with black edges Material: Stainless steel Package Contents: 1 x GPS Speedometer (Other accessories not included) Note: Lighting and screen differences may cause slight color variation between the image and actual product. Measurement error allowed within +/- 1-3cm.