Features: 1.Maximum 99999.99H: This boat hour meter supports 99999.9H maximum hours, perfect for tracking engine time, provide standard industrial timing and data for your car and other equipment. 2.High Accuracy: This mechanical hour meter is featured with high accuracy and compact size, the results can be easily read, suitable for 10?60V AC or DC operating voltage. 3.Wide Application: This mechanical hour meter gauge is suitable for boats, cars, motorcycles, ATV, UTV, karts, motorboats, snowmobiles, lawn tractors, wood chippers, paper shredders, pumps, generators, etc. 4.Durable Material: This engine hourmeter is made of premium plastic material which is strong and highly durable, effectively resistant to impact, long service life. 5.Easy Installation: This round hourmeter is about 2.4 inches wide, and it can be easily installed without complicated steps and tools, saving your time and effort. specification:Item Type: Boat Hour Meter Material: Plastic Application: Suitable for Providing Standard Industrial Timing And Data Supply for Engineering Vehicles, Ships, Motorcycles, All Kinds Of Automobiles And Other Equipment Product Size: Approx. 6 x 6 x 5.5cm / 2.4 x 2.4 x 2.2in ( Manual Measurement, Slight Error May Exist ) PackageList:1 x Boat Hour Meter