Features： 1、GPS Speedometer: Adopt GPS signal, ensures high accuracy, 0‑200KM/H display range, adjustable backlight, low power consumption. Anti fog curved glass, high definition. 2、Wide Working Voltage: 9‑32V ultra wide working voltage, and it can up to 36V, which is safe and dependable to use. 3、Application: This gauge can be used for automobiles, marine boats, yachts, RVs, engineering machinery, etc, strong practicality. 4、IP67 Waterproof: High grade 316 stainless steel and ABS, IP67 waterproof and dustproof, ensures long durability even in acid, alkali and humid environments. 5、Easy Wiring and Installation: Provided a detailed manual, which clearly describes installation, wiring and functions, convenient for using. Specification： Item Type: GPS Speedometer Material: Stainless Steel + ABS Light Color: Colorful (adjustable) Signal: GPS Mounting Hole Diameter: Approx. 85mm/3.3in, and ensure that there is at least 55mm/2.2in space behind the dashboard Working Voltage: 9-32V DC Working Current: ≤100mA Display Range: 0-200KM/H Working Temperature: -30℃-+75℃ Storage Temperature: -40℃-+80℃ Applicable Scenarios: Suitable for automobiles, engines, boats, RVs, yachts, engineering machinery, etc. Package List： 1 x Speedometer 1 x GPS Receiver 1 x Manual  1 x Cover