The Ultra Shark cordless sweeper is a waste of time, money, and effort. I have had extensive experience (sold 50 plus) of these units. They are poorly designed, and cheaply made using poor quality parts. The stock manufacturer warranty is only 90 days (which is just when the battery will begin to lose a charge, the belt will come off, or the poorly made plastic connection to the power head will break). Operation...they do not have suction, and rely on the brush to sweep. Carpet threads, string, and wet debris quickly becomes embeded on the brush. The sales pitch on TV was impressive, and the director must have been a genuis to make such a poor performing sweeper look so much better than it does when you actually have to use it. I depend on repeat customers for sales, and with the many returns and unhappy customers I have experienced when selling the Shark Ultras, I will no longer stock and sell ANY.... Shark products.