IZTOSS Digital Black Hour Meter Gauge for Motorcycle ATV Snowmobile Marine Boat Yama Ski Dirt Dimensions: 2.13 in x 1.46 in x 0.59 in (5.4 cm x 3.7 cm x 1.5 cm) Waterproof material Hour glass symbol appears and flashes on / off to indicate counting time. Drilling into your frame with 2.5mm socket, then secure it to the frame coming with two pick-up screws. Built-in battery power supply, safe and reliable Waterproof material 1.0&#034; LCD screen display Automatic roll over Resolution: 0.1 hour Works on any gas engine Records and displays to 9,999.9 hours. No battery required-connecys to spark plug wire. Hour glass symbol appears and flashes on / off to indicate counting time. Track the service life of your vehicle-oil changes,valve,adjustments,spark plugs,ect. Easy Installation-peel&amp;stick,no wiring necessary,or attach with enclosed hardware. Fit for all motorcycle ATV snowmobile marine ATV boat ski dirt quad bike. By water proof standard, can drop in water to soak Beach car, cross-country motorcycle, lawn mower, oil saw, engineering car, etc induction design, link wire bundle spark plug can operate Low - voltage design, built-in battery, safety, service life up to 5 years 1 x Hour meter 1 x Cable (110cm) 2 x Screws