Product Description: Enhance Your Navigation with the Versatile GPS Tachometer and Speedometer Multi-Functional Display: This 85mm GPS tachometer offers a comprehensive view of essential metrics, including single mileage, total mileage, and COG (Course Over Ground) trip functions. All data is clearly presented on the display screen, ensuring you stay informed on every journey. Superior Advantages: Experience the benefits of high accuracy and rapid position confirmation with this GPS speedometer. Its short starting time and low power consumption ensure efficient operation and contribute to its long service life, making it a reliable companion for all your travels. Precision Engine Speed: The device utilizes a stepping motor to drive the pointer, delivering precise engine speed readings. It also features left and right steering indicators and a headlight switch display function, providing all necessary information for enhanced driving safety. Durable and Weatherproof: Crafted with a stainless steel 316L frame and anti-fog glass, this GPS speedometer is both waterproof and dustproof. It includes polarity protection and anti-fog performance, ensuring reliability in diverse weather conditions. Customizable Backlighting: Tailor your visual experience with 7 adjustable backlight colors, including red, yellow, orange, green, blue, purple, and white. This feature is particularly useful for night driving, offering optimal visibility in low-light conditions. Universal Compatibility: Operating on a DC 932V system, this GPS tachometer is suitable for a wide range of applications, including RVs, yachts, fishing boats,