For use with motorcycle, ATV, UTV, marine and snowmobile Track the service of your vehicles oil changes, valve adjustments, spark plugs, etc. Easy installation: peel & stick, no wiring necessary, or attach with enclosed hardware No battery required, connects to the spark plug wire Works on any gas engine Will fit Moose Racing Hour Meter Mounts 2212-0372 and 2212-0373 Made in the USA