Sennheiser MM 400 Instructions for Use - Page 10

¶ µ Putting the MM 400 into operation Possibilities of charging the battery pack First, connect the charging cable µ to the battery pack as described in section a and then connect the charging cable µ to a power source as described in section b. µ DE a b EN US FR EU AU UK IT ES a Connecting the charging cable to the battery pack You can charge the battery pack either inside or outside the headset. This is helpful if you are using a spare battery pack (to be ordered separately). NL To charge the battery pack inside the headset: ̈ Open the battery pack compartment cover ¶ on the left ear cup. ² ̈ Connect the charging cable µ to the socket for charging cable ² on the headset. To charge the battery pack outside the headset: ̈ Open the battery pack compartment cover ¶ on the left ear cup. ̈ Press the button next to the battery pack compartment and remove the battery pack. ̈ Connect the charging cable µ to the socket for charging cable ² on the battery pack. 9