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, 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 (compatible with 12VDC and 24VDC systems). Backlight colors: red, green, blue, white, yellow, cyan (automatic switching). Functions: 1. COG displays navigation course and orientation for marine and automotive use. 2. Trip meter shows short mileage with power-failure memory; long press button to reset. Total mileage can also be displayed with power-failure memory. 3. Displays cumulative total mileage, non-resettable. 4. OLED LCD display with operating temperature range of -40°C to +80°C. Wiring connections: Red: 9–32VDC (+), Black: Ground (–), Blue: Connect to button to reset trip mileage, Yellow: Backlight (+). Note: Product design may vary slightly between batches; minor differences in appearance or color may occur but do not affect functionality. Type: 0–160MPH. Color: B – Black background with black edges. Material: Stainless steel. Package contents: 1 x GPS Speedometer. Other accessories not included. Note: Lighting and display settings may cause slight color variation between image and actual product. Measurement tolerance: ±1–3cm.