Compact, rugged and durable construction designed for continuous use. Heavy, stable metal base with non-skid rubber feet prevents unnecessary movement of the shaker during use. A heavy duty, variable speed motor delivers quiet and reliable operation with continuous speed variation through a knob at the front, with a maximum speed of about 300 RPM. Also allows for the choice of continuous mode or touch mode, selectable through a rocker switch on the front panel. Operates on 220-240V AC, 50/60Hz.