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: 0-160MPH/H Working Temperature: -30-+75 Storage Temperature: -40-+80 Applicable Scenarios: Suitable for automobiles, engines, boats, RVs, yachts, engineering machinery, etc. 1Precise GPS Speedometer: 0?160MPH/H display range, adjustable backlight, low power consumption. Anti fog curved glass, high definition. 2Wide Working Voltage: 9?32V ultra?wide working voltage design, and it can up to 36V, safe and dependable. 3Application: Suitable for automobiles, marine boats, yachts, RVs, engineering machinery, etc, strong practicality. 4IP67 Waterproof: Made of 316 stainless steel and ABS, IP67 waterproof and dustproof, durable even in acid, alkali and humid environments. 5Simple Installation: Supplied with a detailed manual, which clearly describes installation, wiring and functions, convenient for using. 1 x Speedometer 1 x GPS Receiver 1 x Manual 1 x Cover