Features: 1.【Accumulates Total Running Hours)】- When equipment vibrates, the display shows the total run time of the machine and remains visible. Help you track how many hours you put on your machine. 0.1-hour accuracy. 2. 【No external power required】- Timed by sensing the vibration intensity and amplitude of the machine; The hour meter contains a battery inside. 3.【VIBRATION SENSITIVITY】- Programmable vibration sensitivity. Used to accurately sense the vibration frequency of different machines during operation. Hour meter contains lock function to prevent time usage during transport. Power saving mode to conserve battery life with auto sleep time. 4.【Easy To Install】-Along with two side holes for fastening, no wiring necessary, or attach with enclosed hardware. Features: 1, The maintenance reminder timer completely waterproof 2, Used in all gasoline engine products, such as motorcycles, ATV, ATV, motor boats, lawn mowers, etc. 3, Inductive design, will be tied to the spark-plug on one end, the other end that can work through the product 4, The maximum timing range: 0-99999H 5, A single time and can be cleared, maintenance time reminder: 5H, 10H, 20H 6, LCD screen display 7, Low-voltage design, built-in battery-powered, safe and reliable 8, Plastic paper card packaging, beautiful appearance and high grade Fitment: -Fit motorcycles, ATV, ATV, motor boats, lawn mowers, etc. Specifications: Original box: No Color: black Item size: 72*46*20mm (maximum) Net weight: 80g The length of the power cord is: about 190 cm. Package includes: 1 x Tachometer 1 x Manual(English and Russian versions available）Digital Engine Tach Hour Meter Tachometer Gauge Engine RPM LCD Display Vehicle Maintenance Alert For Car Motorcycle Stroke Engine SZRH A-V