Mini Tachometer LCD Display Waterproof Engine Timer Hour Meter for Bicycle Motorcycle ATV Boat Scooter Clock VE-37 -- Features: Brand new and high quality Track the life of your car oil changers, valve, adjustment, spark plugs etc. Easy to install Peel and stick No batteries required - connect to spark plug wire Works on any gas engine Recording and displaying up to 9,999.9 hours Hourglass symbol appears and flashes on/off to indicate the counting time Automatic rollers over Resolution: 0.1 hour 100% epoxy housing is waterproof, shockproof, stand fire 85 deg; cSpecification: Original Box: No Color: Black Product Size: 54*35*14mm Package Size: 176*101*15mm Package Contents: 1 x Hour Meter 1 x Wire 2 x Screw