Specifications Hign-concerned Chemical:None Special Features:Counter Hour Meter for Motorcycle Item Diameter:3.5 Item Weight:0.05 Item Height:1.4 Item Width:3.5 Item Length:5.4 External Testing Certification:CCC Model Name:Digital Hour Meter Origin:Mainland China Material:ABS 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 Net weight: 62g Packing content: 1 x Hour meter 1 x Wire