With the FC 4-4 floor cleaner you can remove both dry and wet everyday dirt in one step. With the long battery run time of maximum 30 minutes, areas of up to 90 square metres can be cleaned effortlessly. The Duo quick charger supplied enables charging in just 70 minutes. An indicator lets you know when the fresh water tank needs to be refilled and the dirty water tank emptied. After activating the device, the two rollers are automatically moistened with the water from the fresh water tank. The water volume can be adjusted to the floor covering using the two cleaning modes. The FC 4-4 cleans even hard-to-reach places and the hair filter means the machine can easily pick up hair. The integrated hygienic dirty water tank can be easily removed and cleaned after use and because of the 2 tank system you are only ever cleaning your floors with clean water. The FC 4-4 stands by itself and can be stored in a space-saving way thanks to its removable handle. The device is suitable for all hard floors. The 4 V Kärcher Battery Power exchangeable batteries are compatible with all 4 V Kärcher Battery Power devices.