●This round hour meter will allow you to keep track of engine hours so you can monitor service intervals. ●Professional : The quartz hour meter is specially designed for standard industrial timing and supplying data for the reference of maintenance duration for precision equipment. ●Durable: Polycarbonate design featuring waterproof and steady performance, the hour meter gauge is widely used for tracking engine hours. ●Easy to install: You can mount this hour meter gauge right on your dash or in an inconspicuous space. ●Notice:It is recommended to work indoors or in the car to prevent rainwater from getting wet for a long time.Please pay attention to vibration strength when using.