EZMAX&reg; Waterproof Digital LCD Display Engine Hour Meter Gauge Resettable Inductive for Racing Motorcycle Dirt Quad Bike ATV Snowmobile - Black Records and Displays to 9,999.9 Hours. Stand-by Time up to over 20,000 hours Easy Installation-peel&stick, no wiring necessary, or attach with enclosed hardware Automatic Roll Over Resolution 0.1 Hour. 100% epoxy encapsulated casing resists water,shock,stand fireof 85 Celsius degree Inductive Hour Meter for Marine, ATV, Motorcycle, Dirt, Ski Track. the Service Life of Your Vehicle-Oil Changes, Valve, Adjustments, Spark Plugs No battery needed - connect to spark plug wire , Works on Any Gas Engine