Resettable timer and service modes that flash service messages at 5, 10 and 20 hours of operationReal time reading of Tach up to 20k rpm; records max rpmAlso keeps track of total time accumulatedKeeps track of important maintenance times for your bike including oil changes, valve adjustments, spark plugs, etc.Includes log book to write down oil changes, valve service, chassis lubrication, clutch service and suspension setting notesUsable with any gas engineRecords and displays up to 9.999,9 hoursJust peel and stick or attach with enclosed hardwareConnects to spark plug wire; no batteries are neededHours automatically roll overSafely and completely encased in 100% epoxyMount for hour meter available separately