Features: Cleans wood, tile and carpeted floors Moves about on its own while cleaning Smart enough to get out of tight places Whisper-quiet while operating Ideal for any size room Rechargeable batteries included Automatic Modes: Random, Spiral & Along The Wall Surfaces: Wood, Tile, Carpet (works best on low pile carpeting) Operating Time: Up to 45 minutes Battery: 12 Rechargeable Ni-Cd AA (included) Dimensions: 11.5" x 11" x 4 Weight: 3.9 lbs.