... GY Digital meter of motorcycle partApplicable models Use of motor vehicle emissions below 300ccFeatures 1.Working stability , LED display accurate2.Indicator light ... a blank shot,show a clear three-dimensional3. Engine speed indicator simulation by a stepping motor dynamic instructions, the engine speed ... , total 1Km, the time for the 1±0.5min Digital speedmeterRange 0~299Km/h,the error is one-tenth(10 ...