Hour Meter ---- Contains tachometer, hour meter, service counters;helps you track the number of hours you have spent on your engine. The total number of hours can be reset;0. 1 hour accuracyMAINTENANCE REMINDER ---- Programmable maintenance timer (SERVICE), countdown maintenance reminder time;When the maintenance time comes, the service warning icon flashes to remindTACHOMETER ---- Accurately records your RPM when the engine is running, helps adjust engine speed at idle;can be programmed for different engine firing modesREPLACEABLE BATTERY ---- Internal replaceable CR2450 battery, data retained after battery replacement;When the engine is stopped, the player will automatically turn off after 2 minutes;press the button to read the screen, data retained after shutdownEasy to install;Waterproof rating: IP65; CE ROHS certification, 2 years warranty