Measuring range: rotative velocity laser 2.5 to 99999r/min
Laser tach detecting distance: 50 to 600mm
Accuracy: about (0.05percent n add 1d)
Resolution: 0.01/0.1/1
Memory: max/min/last value
Power supply: 4x1.5V AA (UM-3) battery
Dimensions: 146x71x25mm
Weight (not including probe):114g