Usage Tips: Suitable for cars, vessels, boats, yachts, etc. The signal comes directly from the satellite signal receiver (GPS Speed Sensor). The gauge features high precision, quick location confirmation, and short startup time. IP67 waterproof and dustproof rating. Stepper motors used for full range of stepping gauges, offering low power consumption, longer life, and higher precision. Features curved glass with anti-fogging function. Ultra-wide working voltage design (long-term operating voltage: 9-32V, 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: 9-32VDC (12VDC/24VDC). 7 backlight colors: red, green, blue, white, yellow, cyan (automatic). Functions: 1. COG displays navigation course and orientation. 2. Trip displays short mileage, which can be saved in case of power failure. Long press the button to reset. Total mileage can also be displayed and saved during power failure. 3. Displays total mileage, which is not switchable. 4. OLED LCD with working temperature range of -40°C to +80°C. Connection: Red: 9-32VDC Black: Ground Blue: Connect to button to reset short mileage Yellow: Backlight Note: Product may vary slightly between batches, including minor differences in appearance or color, which do not affect functionality. Type: 0-200KMH Color: B: Black background with black edges Material: Stainless steel Package Contents: 1 x GPS Speedometer Only the above items are included; other items are not included. Note: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement error allowance: +/- 1-3cm.