OVERVIEW Kirby Ultimate Is One of the Most Widely Used Vacuums in the Kirby Line. Very Powerful Suction, Smooth Running. The Only Model that has A 2 Speed Motor System for Increased Power. The Tech Drive Power Assist System(Self Propelled) Steers the Vacuum across All Surfaces with so Mush Ease that a Child Could Operate the Cleaner with little or no Effort. Use it as a Upright with Straight Suction. Easily Converts to a Portable Vacuum.