Self adjusting, goes from carpet to bare floors with no adjustments. 40' cord is connected to the pigtail cord using a cord clamp, allowing you to easily replace a damaged cord without expensive repairs or re-wiring. Soft wheels protect wood floors. The large rear wheels make moving from room to room an ease. Fingertip-controlled on/off switch. Top-fill design keeps power at maximum even while bag fills. Powerful, high-speed, balanced, roller brushes. Easy-use carry handle allows for simple, sturdy carrying. Two-year commercial warranty.