Designed to deliver the perfect taste. The K400 variable speed blender features a 3-part blending system that easily blends even the toughest ingredients, from kale to almonds and more, with a powerful vortex created by the ribbed jar design, unique asymmetric blade that blends at four distinct angles, and Intelli-Speed® Motor Control, which senses contents and maintains the optimal speed to power through all ingredients. Control the taste and texture with the 5-speed variable speed dial, or use the 3 Preset Recipe Programs: Ice Crush, Icy Drinks, and Smoothie. The Soft Start® Feature starts the motor at a slower speed to pull food into the blade then quickly increases to the selected speed setting to avoid splatter.