SEARON Tach Hour Meter Tachometer 2 & 4 Stroke Small Engine Spark for Boat Outboard Mercury Motocross Lawn Mower Black 2019 Brand New Inductive Digital Tachometer/Maintenance/Hour Meter Max RPM Recall for 2/4 Stroke Engines, RC Toys, PWC, ATV, Motorcycles, Marine Engines, Chain Saws, Tractors, Lawnmowers and Gas Powered Devices Accumulate Non-resettable Total Time Displays from 0 to 999,999 hours. Records 2 Resettable JOB Hours: JOB1 & JOB 2. RPM reading displays from 0 to 30,000 RPM. Max RPM Recall. 9 programmable Firing Patterns Are Available Flash Alerts Every 20 Hour for "Clean Air Filter" and Every 30 Hours for "Oil Change". Programmable Maintenance Interval Timer (SVC: 0~1000 hours). 2 Years Warranty