You need four AA batteries. Follow the pole marks + and - in the battery compartment and insert the batteries correspondingly. Close the battery compartment again. 0 Sharpening Pencil The sharpener is suitable for sharpening pencils up to a diameter of 7.5mm There is a small switch in the opening,which starts the sharpener automatically as soon as the pencil is placed into the opening. Hold the pencil with the side to be sharpened into the opening. The sharpener rotates forcefully. Keep a