Racing inspired small design, works on the inner batteryMultiple features including: tachometer, thermometer, engine running hour, MAX record and RPM/temperature alarm functions0-20000 RPM range (100 RPM resolution)5000-20000 warning setting range (100 RPM resolution)99.999h total hour meter range, resets automatically after 99.999h0-250 ?C (32-482 ?F) maximum temperature record with an effective temperature range of -10-60 ?CIncludes back light dimming functions Housing ColorBlackProduct NameMeterReadout ColorBlackStyleElectronicTypeDigital TachometerUnitsEachVendor part numberBA054000