Package included: you will be provided with 2 pieces inductive hour meters with 2 pieces wires and 4 pieces screws, enough to satisfy your daily requirements, and the sensible accessories of wires and screws will make your usage and installation more convenient Scope of application: the digital engine meter is widely applied for many mechanical equipments, like generators, vibrators, shredders, lawn mowers, motorcycles, automobiles, trucks, engineering vehicles and more, help you keep track of how much time you spend on your engine Waterproof material: the inductive hour meter is made of plastic material with epoxy encapsulated casing, waterproof, resistant to shock, and can withstand temperatures of 85 degrees Celsius, durable and sturdy, can serve you for a long time Easy to install: you could the small hour tachometer and plug to the wire, then secure the meter with screws or zips No batteries needed, you just need to the plug to the wire, an easy way for you to install Detailed parameter: the engine hour meter is designed with an LCD display, which can record to 9999.9 hours, the maximum speed range is 99999 RPM, and the standby time is over 20000 hours, and the screen of meter will flash to indicate the counting time size:5.4x3.6cm Material:plastic colour:Black Package Contents: 2 X inductive hour meters 2 X wires 4 X screws Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.