Feature 1Double 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. 2Stable Performance: Using imported chips, stable performance. Every detail through multiple processes, after many tests, carefully bulid. 3High Indication Accuracy: Stepper motor drive pointer, accurate display of engine speed, and with liquid crystal display clear display of mileage. 4Easy Installation: Easy to install, after installing to the hole, twist the knob and then screw the cover. 5Widely Use: GPS speedometer is suitable for cars, engines, boats, saloon cars, yachts, engineering machinery, etc.Item Type: GPSspeedometerMaterial: ABS+Stainless steelLighting Color: 7 color (adjustable)Signal: GPSInstall Caliber: Approx. 85mm/3.35in, and make sure there is at least Approx. 55mm/2.17in space behind the dashboardOperating Voltage: 9-32V DCOperating Current: 100mAIndication Range: 0-120KM/HOperating Temperature: -30 - +75Storage Temperature: -40 - +80Fitment: Suitable for cars, engines, boats, saloon cars, yachts, engineering machinery, etc. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x GPSspeedometer1 xGPS Receiver Box1 x Instructions1 xScrewCap