At 56 dBa (lower than the volume level of normal conversation), it is not intrusive when people are present. The powerful brush head sweeps debris into an easily removable 1-liter bin. At 12" wide, it has a nicely sized cleaning path while remaining maneuverable. The unit comes with a removable 7.2 volt rechargeable lithium ion battery. Also included is a single battery charge that provides a full charge in about 12 hours. Easy to remove dustpan. Changeable roller brush. Handle articulates, providing superior maneuverability.