Model : KL-0071 Measuring range : 30¡«99999r/min Accuracy : (0.02%n+1dight) Measuring distance : 5¡«150cm Store time : Until take out the battery Memory : Max/Min/Last Value OperatingTemperature : 0¡«70¡æ Adoption time : 1(automation) Power supply : 31.5V AAA BATTERY Dimensions : 72mm x 136mm x 33mm Weight : 146g