Package Included: You will receive 2 piece inductive hour meters with 2 wires and 4 screws, enough quantity to meet your daily use needs, and the thoughtful wire and screw accessories will make your use and installation more practical Scope of application: The digital engine counter is widely used for many mechanical equipment, such as generators, vibrators, chippers, lawn mowers, motorcycles, automobiles, trucks, engineering vehicles and more, help you keep track of the time you spend on your engine Waterproof Material: Auto-stop tachometer is made of ABS material with epoxy encapsulated housing , waterproof, impact resistant and can withstand temperatures of 85 degrees Celsius, durable and sturdy, can serve you for a long time Easy to install: you can connect the small hourly tachometer and the spark plug to the wire, then fix the meter with screws or zippers; No batteries needed, just connect the spark plug to the wire, easy to install Detailed Parameter: Engine hour meter is designed with LCD display, which can record up to 9999.9 hours, the maximum speed range is 99,999 rpm, and the standby time is over 20,000 hours, and the counter screen will flash to indicate the counting time Specification: / p Material: ABS Size: Hour meter: 2.1 x 1.5 x 0.6 inch / 5.4 x 3.7 x 1.5cm (LWH) Thread: 43 inch / 110 cm in length Color: as pictures show Package includes: 2 x LCD hour meters 2 x Wires 4 x Screws Warm Notice: Manual measurement, please allow slight size errors. colors may exist slight difference due to different monitor.