[. . . ] Please read the use instructions carefully and thoroughly before using the appliance. [. . . ] Before closing the battery compartment, make sure the cover is dry and clean. When using it in a shower, we recommend that you apply shaving foam or gel. Long hair trimmer (M-90 only) Use the extendable long hair trimmer (5) for exact trimming of side burns and moustaches. To operate, slide the long hair trimmer to the right (e) and turn on the appliance. Cleaning and maintenance For optimum shaving performance, clean the shaver after each use: Cleaning under running water Turn on the shaver and hold the shaver head under warm running water (f). Then turn it off and remove the shaver foil (1) as shown (g) and let it dry. If you often clean your shaver under running water, put a drop of light machine oil onto the shaver foil. Cleaning with the brush Remove the shaver foil (1) and tap it gently against a flat surface. [. . . ] At the end of their life, empty batteries and the appliance should not be thrown away with general waste or rubbish. [. . . ]