SODIAL(R) Inductive Hour Meter for Bike Motorcycle ATV Snowmobile Boat Ski Dirt Gas Engine 100% Brand new and high quality. Track the Service Life of Your Vehicle-Oil Changes,Valve,Adjustments,Spark Plugs,ect Easy Installation-peel&stick,no wiring necessary,or attach with enclosed hardware. No Battery Required-connecys to spark plug wire. Works on Any Gas Engine.