【Material】85mm(3-3/8") boat GPS speedometer is made of Stainless Steel 316L Bezel, Rubber, Anti-fog Glass and IP67 waterproof. Standard 85mm (3-3/8") hole in the panel and allow a clearance of 55mm (2-3/16”) behind the panel to fit the gauge
【Wide Applicability】ARTILAURA gps speedometer suitable for all vehicles Motorcycle/ Boat/Truck/Bus/Car and off-road vehicles. It gets quicker under a clear view of the sky. The signal comes directly from the satellite signal receiver(GPS Antenna), don't need other speed sensor
【Stability】The GPS speedometer and tachometer gauge has the advantages of high precision, quick location confirmation and short start up time. IP67 Waterproof Rating – Fully sealed against dust, rain, and splashes. Marine GPS speedometer fit for AUTO, boat, marine, all-weather use