Acceleration 10Hz-1KHz 0.1-400m/ms+ 0.3-1312ft/ms+ 10Hz-10KHz 0.1-400m/ms+ 0.3-1312ft/ms+ Velocity 10Hz-1K 0.1-400mm/s 0.004-16.0inch Displacement 10Hz-1KHz 0.001-4.0mm 0.04-160 mil Accuracy:++5% Auto power off RPM(revolution):5-100000r/min Frequency:0.1 to 10KHz Metric/imperial conversion With RS232C interface Max hold Operating conditions:0-+45f+(32=¬-104=¬),f-90%RH Power supply:4x1.5V AAA(UM-4)battery Battery indicator: low battery indicator Optional accessories: RS-232C cable & software: 1.USB adaptor for RS-232C 2.Bluetooth interface Dimensions : 124x62x30mm Weight: 120g(not including battery)