Surface Mounted Inductive Hour/Tach Meter. Works on any gasoline engine up to 8 cylinders. Knowing what to service and when, is the key to a successful preventative maintenance program for your motorcycle, ATV, PWC, Boat and Generator.The hour/tach meter shows total hours accumulated when engine is off. Shows Tachometer when engine is running. Adjustable inductive inputs for multiple spark combinations. Installation is easy with simple one wire wrap around spark plug boot or wire. Green backlighted LCD display measures 1-5/8" W x 5/8" W. Built in replaceable battery and battery level indicator on screen display. Works on any gas engine up to 8 cylinders and 20,000 rpmPick-up wire length is 60"Easy Installation - peel & stick, no wiring necessary just plug and playWarranty one year Does not fit on any Hardline Products Meter Mounts (HRMM-2,3,4,5)