Feature:1. Induction tachometer for 2stroke or 4stroke gasoline engines, recording and displaying 99999 hours / 20000 RPM.2. Support accumulated running time TOT, record part of running time JOB, and the maintenance timer can be freely set to 0200 hours SVC.3. The operation of the Hour meter is connected by5 ft. insulated wire. You need wind the wire around the spark plugs about 5 times. The gauge is activated by the engine's spark.4. Measuring the current engine speed, record and view the maximum engine speed, and set the overspeed warning function. The refreshed rate can be set to 0.5S or 1S. The tachometer displays the current RPM when the engine is running.5. With reminder service, users can set this LCD tachometer from 0 hours to 200 hours. Replaceable CR2032 battery, automatically stores data after battery replacement.Specification:Item Type: Tachometer Material: ABSColor: BlackBattery: CR2032 button battery, 210mAH (built-in)Waterproof Rate: IP65Induction Wire: Approx. 1.5M/4.9ftProduct Size: Approx. 67.1 x 35 x 17.6mm/2.6 x 1.4 x 0.7inDisplay Screen: LCD+ Green BacklightScreen Size: Approx. 40.9 x 16.9mm/1.6 x 0.7inInduction Wire Type: UL2464 26AWG/2CRefresh Rate: 0.5S/1SHours Range: 0-99999HRPM Range: 0-20000RPMRPM Alert Setting Range:1000-20000RPMN.W.46.7Length Battery Specification: CR2032 210mAHTiming Accuracy:0.1HMaintinance Timer:0-200HRPM Accuracy:10RPMFunction:Timing System Including:Total running hours TOT,total hours are non-resettablePartial running time JOB,partial hours are resettableMaintenance timer can be set freely to 0-200 hours SVCHours Range 0-99,999.9 hours with 0.1 hours accuracyRPM Measuring System:Measuring current engine RPMrecording and recall engine Maximum RPMSetting overspeed warning function and can resettableRPM Range 0- 20,000,RPMs with 10 RPM accuracy.Replaceable CR2032 battery.Applicative Engine Types:2 Stroke Gasoline Engine of 1 Cylinder/ 2 Cylinders/ 3 Cylinders4 Stroke Gasoline Engine of 1 Cylinder/ 2 Cylinders/ 3 Cylinders/ 4 Cylinders/ 5 Cylinders/ 6 Cylinders/ 8 Cylinders/ 12 Cylinders.Package List:1 x Gauge 2 x Hook&Loop 2 x Cable Tie 1 x Manual