Samsung POWERbot Essential Cleaning Robot Vacuum, Graphite Silver (Refurbished) This Certified Refurbished product is tested & certified by Samsung to look and work like new. The product includes accessories, and is backed by a 90 Day warranty. More Powerful Suction Than The Leading Robot Vacuum Brand Creates The Optimal Cleaning Path and Avoids Obstacles Less clogging of filter for more consistent power than our previous model Combo Brush is Specially Designed Brush to Pick Up Hair With Less Tangles