Motormeters&reg; Digital Wireless Hour Service Meter Gauge -Atv, Motorcycles, Generators Small Engines (Black) Digital Wireless Hour/Service Meter - Easy install! No drilling or wiring! Keep track of the hour or servlice life of your small engine. Works on any combustion engine - Unique lock feature Perfect for ATV"s, Motorcycles, Generators, Small Engines, Chainsaws, ETC IP68 Grade Water Proof design- Great for Outboard Motors, Jet skis etc.