Features: Brand new and high quality Track the service life of vehicle-oil changs, valve, adjustments, spark plugs, etc. Easy to install Peel and stick No battery needed - connect to spark plug wire Works on Any Gas Engine Record and display to 9,999.9 hours Hour glass symbol appears and flashes on/off to indicate counting time Automatic roll over Resolution: 0.1 hour 100% epoxy encapsulated casing resists water, shock, stand fire of 85C Specification: Original box: No Color: Black Item size: 54*35*14mm Package size: 176*101*15mm Packing content: 1 x Hour meter 1 x Wire 2 x Screw About Our Company We are a professional Beauty and Healthy supplier.We provide the high-quality goods and good services, you can buy confidence in my store. If there is any question,please