100% new product Using high-quality materials, long product life After professional testing, high sensitivity Track the Service Life of Your Vehicle-Oil Changes,Valve,Adjustments,Spark Plugs,... Easy Installation-peel stick,no wiring necessary,or attach with enclosed hardware. Internal Battery-Connecys to spark plug wire The is completely waterproof Used in all gasoline engine products, such as motorcycles, ATVs, ATVs, motor boats, lawn mowers, etc. The product has an induction design and is fixed by screws. Wrap the wire around the spark plug 5 times and start timing when the signal is sensed. The maximum timing range is: 0-99999H LCD display Low voltage design, built-in battery power supply, safe and reliable Blister paper card packaging, beautiful appearance and high grade Colour: black Material: ABS Package Contents: 1 x Hour meter 2 x Screw Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.