... . 2.Works on Any Gasoline Engines. 3.Waterproof 100%. GY244A-9 Digital Inductive Hour Meter 1. It applies to various types ... mower, gliders, motorcycles, cars, trucks, construction vehicles, snow vehicles, ATVs, motor boats, and other power generation equipment and so on.2 ... the battery is more than 3 years. ·Displays to 9999.9 hours.·Packing : Neutral Packing (white box) or Blister paper card ...