1Multi Functional: 85mm Gps tachometer, the single mileage, total mileage and Cog trip functions are clearly displayed on the display screen. 2Advantages: Gps speedometer has the advantages of high accuracy, fast position confirmation, short starting time, low power consumption and long service life. 3High Accuracy: Stepping motor is used to drive pointer to accurately display engine speed, with left and right steering indicator function and headlight switch display function. 4Waterproof and Antifog: Gps speedometer is made of stainless steel 316L frame and anti fog glass. Waterproof and dustproof, with polarity protection and anti fog performance. 5Colorful Backlit: Designed with 7 colors backlit, red, yellow, orange, green, blue, purple, white, can be freely adjusted, which is convenient for night use. 6Universal: Dc 9?32V, Gps tachometer is applicable to Rv, yacht, fishing boat, ship, motorcycle, automobile modification and other fields.