Easily attaches to all S4 models.  Many practical details make this brush easy to operate.

No cumbersome cables thanks to the rechargeable battery.

Safe and saves energy:  with the Auto-Stop Function, the electrobrush turns itself off when it does not have contact with the floor, or is not moved for a period of time

Comes with Two, long-lasting nickel metal hydride (NiMh) battery packs that deliver over 45 minutes of vacuuming each.

An intelligent recharging station with a recharging time of only 5 hours if the battery is completely drained...that's half the time of other battery packs! The battery life will not be affected if recharged when the pack is only partially used... no memory in the battery means you don't have to worry about your battery only partially charging!