[. . . ] When the shaver is used for the first time, or if it has not been used for some time, the shaver must be charged for 4 hours. About the rechargeable battery To guarantee a long life for your rechargeable battery, please observe the following requirements: · You can also shave directly from the mains. [. . . ] About the rechargeable battery To guarantee a long life for your rechargeable battery, please observe the following requirements: · You can also shave directly from the mains. When the battery is completely empty, wait a few seconds before switching on. ⷠEnsure that the shaver never comes in contact with water. The shaver on by keeping the small round knob on the switch pressed-in and sliding the switch upwards. This security feature prevents the shaver from being switched on accidentally. You have to lubricate the central point of the inside of the guard only if your skin is quite dry, or if you have degreased the shaving unit. Reassemble the shaving unit by pressing and turning the wheel clockwise. You have to lubricate the upper side of the shaving heads only if your skin is quite dry or if you have degreased the shaving unit. Replacing the shaving heads Use only Philishave shaving heads (type HQ 3) to replace damaged or worn shaving heads. The built-in battery is environmentally-friendly and does not contain cadmium, lead or mercury. [. . . ] Replacing the shaving heads Use only Philishave shaving heads (type HQ 3) to replace damaged or worn shaving heads. The built-in battery is environmentally-friendly and does not contain cadmium, lead or mercury. [. . . ]