Features 1、Excellent Performance: GPS boat speedometer less power consumption, longer life, quick location confirmation, short start up time. 2、Double Protection: Adopts double protection, curved glass and high transparent PC material, to prevent mist from entering the instrument, to avoid fog on the glass surface resulting in unable to see the instrument. 3、Carefully Bulid: Using imported chips, high accuracy, stable performance, easy installation, every detail through multiple processes, after many tests, carefully bulid. 4、High Indication Accuracy: Stepper motor drive pointer, accurate display of engine speed, and with liquid crystal display clear display of mileage. 5、Widely Use: GPS speedometer is suitable for cars, engines, boats, saloon cars, yachts, engineering machinery, etc. Specifications: Item Type: GPS speedometer Material: ABS+Stainless steel Lighting Color: 7 color (adjustable) Signal: GPS Install Caliber: Approx. 85mm/3.35in, and make sure there is at least Approx. 55mm/2.17in space behind the dashboard Operating Voltage: 9-32V DC Operating Current: ≤100mA Indication Range: 0-30KM/H Operating Temperature: -30℃ - +75℃ Storage Temperature: -40℃ - +80℃ Fitment: Suitable for cars, engines, boats, saloon cars, yachts, engineering machinery, etc. Package List 1 x GPS speedometer 1 x GPS Receiver Box 1 x Instructions 1 x Screw Cap