[. . . ] In many countries 85 dB(A) is the maximum legally permissible level for continuous noise exposure during the working day. Exposure to sounds of higher volume levels or for longer durations can permanently damage your hearing! [. . . ] Set the NoiseGardTM ON/OFF switch ³ to the desired position: ON: NoiseGardTM is switched on. The LED · lights up, indicating the battery charge status (see page 9). The LED · is off. 8 Powering NoiseGardTM via two (rechargeable) batteries Insert two 1. 5 V AA alkaline batteries (IEC LR 6) or two 1. 2 V AA rechargeable batteries (IEC LR 6). Observe correct polarity when inserting the batteries. The operating time with batteries/rechargeable batteries is approx. With NoiseGardTM switched on (see page 8), the LED · provides information on the remaining battery/ rechargeable battery capacity. Replace the batteries. 9 Care and maintenance Cleaning the headset Use a soft, slightly damp cloth to clean the headset from time to time. If the headset is very dirty, use a cloth dampened with mild, soapy water. Water entering the housing of the headset can cause a short-circuit and damage the electronics. Replacing the earpads For reasons of hygiene, the earpads should be replaced from time to time. Attach the new earpad to the earcup by pressing firmly around the earpad until you hear all 12 latches lock into place. [. . . ] 130 g Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. For the current warranty conditions, please visit our web site at www. sennheiser. com or contact your Sennheiser partner. CE Declaration of Conformity This equipment is in compliance with the essential requirements and other relevant provisions of Directive 2004/108/EU. [. . . ]