Hour Meter ---- Contains tachometer, hour meter, service meters; helps you track how many hours you have put into your engine. Total hours can be reset; 0.1 hours accuracy MAINTENANCE REMINDER ---- Programmable maintenance timer (SERVICE), countdown maintenance reminder time; When maintenance time comes, the service warning icon will flash to remind TACHOMETER ---- Accurately records your RPM when the engine is running, helps adjust engine idle speed; can be programmed for different engine firing modes Product Features: 1.Hour Meter (HOURS) Features ---- Lets you know how many hours you have put into your engine. When the engine is off, the display shows the total engine running time. and remains visible. Total Hours reading displays 0 to 99,999 hours, 0.1 hour accuracy, Total hours can be reset 2.Service Timers (SERVICE) Features ---- Countdown tracking time, Maintenance reminder, Air filter replacement similar Programmable maintenance interval time from 0 to 999,999 hours When maintenance time comes, the service warning icon will flash to remind you Countdown tracking service reminder number, 0.1 hour accuracy 3.Tachometer Functions ---- Display shows current engine RPM, helps to adjust engine idle speed Accurat ely records your RPM when the engine is running Can be programmed for different engine firing speeds. Tachometer displays speed from 0 to 25,000 RPM and 10 RPM. resolution RPM update time refresh rate: 0.5S 4.Other features When the engine is stopped, the player will automatically turn off after 2 minutes; press the button to read the screen, data retained after stopping Color: Black Dimensions: 7.35 x 4.7 x 2 cm Quantity sold: 1 piece Kindly tips Different lighting and display may cause the product to be slightly different from the actual product. The measurement tolerance is +/- 1-3 cm.