1Antifog: Speedometer adopts double?layer protection, curved glass + high transparent Pc material, to avoid fogging on the glass surface and making it impossible to see the instrument clearly. 2High Accuracy: Using imported chips, stepping motor drive pointer, high accuracy, stable performance, every detail has gone through multiple processes, after many inspections, carefully crafted. 3Lcd Display: The liquid crystal display clearly shows the mileage, the indication accuracy is high, the repeatability and versatility are strong, the reliability is stable, the drive and control are relatively simple and so on. 4Wide Application: Suitable for automobiles, engines, boats, RVs, yachts, engineering machinery, etc. 5Easy Installation: The Gps speedometer is easy to install. After installing it in the hole, you can tighten the knob by hand and then turn the cover.