[. . . ] The shaving time of a fully charged shaver can range from 55 to 70 minutes, depending on your type of beard and your shaving behaviour, and is calculated by the built-in computer. During the first few charges, the shaving time indicated is a conservative estimate, which will be adjusted automatically to the actual shaving time once the shaver has determined your shaving behaviour. That the shaver is to be C To remind you will be about oncedueweek in cleaned, which a case of normal use, the tap symbol with blinking water drops appears on the display. [. . . ] Contact the Customer Care Centre in your country about the availability of this accessory. You can also clean the shaver in the following way: Every day: shaving unit and hair chamber 1 Switch the shaver off, remove the powerplug from the wall socket and pull the appliance plug out of the shaver. Clean the shaving unit and the hair chamber by rinsing them under a hot tap for some time. Make sure the inside of the shaving unit and the hair chamber have been cleaned properly. Never dry the shaving unit with a towel or tissue as this may damage the shaving heads. Open the shaving unit again and leave it open to let the appliance dry completely. You can also clean the hair chamber without water by using the brush supplied. Every six months: shaving heads Open the shaving unit, turn the wheel anticlockwise (1) and remove the retaining frame (2). Do not clean more than one cutter and guard at a time, since they are all matching sets. If you accidentally mix up the cutters and guards, it may take several weeks before optimal shaving performance is restored. Put the retaining frame back into the shaving unit, press the wheel (1) and turn it clockwise (2). 1 Switch the shaver off, remove the powerplug from the wall socket and pull the appliance plug out of the shaver. Lubricate the trimmer teeth with a drop of sewing machine oil every six months. Replace the shaving heads every two years for optimal shaving results. [. . . ] Cause: water stays behind on the metal parts of the appliance after cleaning. To prevent scale deposits on the metal parts of the appliance, wipe the shaver dry with a towel or tissue after rinsing. Never wipe the shaving unit with a towel or a tissue, as this could damage the shaving heads. [. . . ]