Tracks service time and rpm of your machine; perfect for timely oil changes, valve adjustments, spark plug replacements, etc.Resettable maximum rpmUsable with any gasoline engineAdjustable input for dual or single spark ignition systemsIncludes log book for writing down oil changes, valve service, chassis lubrication, clutch service and suspension setting notesWorks with any gas engineReal time reading of tach up to 20k rpmRecord total hours accumulated up to 9.999,99 hours; not resettable/erasablePeel and stick or attach with enclosed hardwareConnects to spark plug wire; no batteries are requiredSafely and completely encased in 100% epoxy