Note The replaceable battery version does not include CR2450 batteries, you need to buy them locally Features: New Tachometer Hour Meter For Motorcycle ATV Snowmobile Boat Gasoline Engine - Brand new and high quality Tachometer / Hour Meter, with large LCD display - Great for Cart Engines operating in the 25,000 + RPM range - work on any 2 or 4 stroke gasoline powered engine. - With Reset to Zero Hours function, the hour meter reads up to 10000 hours and then resets to Zero & The tachometer can read up to 99,999 RPM - Programmable Maintenance hour setting with service Icon, a reminder when to change oil or other service - With wrap black wire around sparkplug wire, can work on all spark ignition engines by selecting engine type using S1 and S2 buttons - Splash Proof & Easy Installation Specification: Color: Black Item size: 72*46*20mm(max) Net weight:60g The wire length appox 170cm After the restart, the data will be cleared Hold down the S1 key until 05 is displayed, release the S1 key, 8-10 seconds after the display back to the total time. Press S1 and S2 at the same time, make the data from 01-09, the system will reset, all the data will be cleared , speed mode defaults to 02 Package included : 1 x Tachometer MeterNon-Replaceable not include CR2450 battery User manual download link :