Press soft knob to rotate blades for even chopping of onions, vegetables, herbs, and more. Internal soft bumper absorbs any shock to increase comfort and sound quality. Chop ingredients in enclosed cup with soft, nonslip base or chop directly on cutting board. Clear lid has measurement markings. Rotating tab within the cup prevents food from accumulating on side walls. Entire blade cartridge can be removed for cleaning. Spoon included. Dishwasher safe.