Features: It used to record running time of engines. Suitable for all gasoline engines. With large LCD display for easy reading. Inductive design, you just need to wrap the wire around the spark plugs. Powered by built in batteries (service life about 3 years). Simple installation, durable and waterproof. Specifications: Material: ABS Color: Black Timing Range: 0-99999Hrs Accuracy: 0.1Hrs Waterproof Grade: IP68 Power: 1 x CR2450 Battery Battery Life: 3 Years Package Weight: approx. 60g Package Included: 1 x Hour Meter 1 x Wire 2 x Screw 2 x Zip Cable Tie