Looking for a programmable and resettable tachometer and hourmeter for RC toys, lawnmower, garden tractor, riding mower, leaf blower, pressure washer, chainsaw, snowblower, scrubber, brush mower, line trimmer, string trimmer, portable inverter, generator, motorcycle, bicycle, dirtbike, ATV, UTV, scooter, paramotor, Harley dual-sport bike, golf cart, outboard Jet ski, pontoon boat, Mercury race boat, hovercraft, etc...?Bohisen rpm meter works for most types of gasoline engines, 2 stroke or 4 stroke gas engines, such as outdoor power equipment, generators, agriculture, construction machinery, vehicles, boats, Marine, etc...Description:Easy to Install the digital memory tachometer.Large LCD display for easy reading.Waterproof Inductive Hour Meter Suitable for all 2 Stroke & 4 Stroke gasoline engines.Tachometer and Engine Hour Meter show both engine RPM and hours of operation.Note:The connection between chainsaw tachometer and engine is only one wire, please do wrap 4-5 turns of the wire to the engine's spark plug fire.Package Includes:1* Engine hour meter1* Fixed Wire (1.9m)1* English User Manual