Inductive Tachometer hour meter has built in changeable battery, self powered by replaceable internal battery, rated for 35,000 hours of operation in digital tachometer, micro but big useful conductive instruments for maintenance reminder, widely used in industrial, agriculture, construction machinery

Small Engine Tachometer and Engine Hour Meter, it will show both engine RPM and hours of operation, max in 99,999 RPM reader. tuning tachometer, hour meter and service timer function 3 in 1, suitable for gasoline engine used in boat, outboard marine, motorcycle, lawn mower, chainsaw, dirt bike, car, go kart, tractor, automotive, scooter, golf cart, moped, jet ski, pressure washer, pit bike, minibike, snowmobile, sailboat, snowblower

Led hour meter diagnostic the service life of your vehicle-Oil Changes, Valve, Adjustments, Spark Plugs replacement, etc. Countdown induction hourmeter display the engine run time, when your setted maintenance time reached, the service warning icon flashes

Tiny tach wired Tachometer and Engine RPM gauge is super easy installation, a simple and easy to use portable tac that gets the job done with minimal complication, hall effect gas generator rpm tester tool hr metre just need wrap the single black wire to contact the spark plug fire of your engine(turn at least 5 rounds to make sure the connection is tight)

Waterproof universal hour meter suitable for all two stroke (single/twin/3/6 cylinders) & four stroke (single/twin/3/4/5/6/8/12 cylinders) gasoline engines. resettable electronic tachometer can reset total works hour and maintenance time, monitor the engine status in order to repair in time