Nokia BH-904 ユーザーズマニュアル

a noisy environment. You can use the 
boom to answer or end a call.

To use the boom, gently pull it down 
toward your mouth (14), or push it up 
to its initial position (15).

The headset automatically adjusts the 
volume according to ambient noise. To 
manually adjust the volume, slide the 
volume key up or down. To adjust the 
volume quickly, slide and hold the key.

The selected volume level is saved for 
the device that you currently use with 
the headset.

To make a call, use your mobile device 
in the normal way when the headset is 
connected to it.

To redial the number you last called (if 
your mobile device supports this 
feature with the headset), when no 

call is in progress, press the answer/
end key twice.

To activate voice dialling (if your 
mobile device supports this feature 
with the headset), when no call is in 
progress, press and hold the answer/
end key for about 2 seconds. Proceed 
as described in the user guide of the 
mobile device.

To answer a call, pull the boom 
completely down toward your mouth, 
or press the answer/end key. (For noise 
cancellation, the boom has to be 
completely pulled down.) To reject a 
call, press the answer/end key twice.

To end a call, push the boom up to its 
initial position, or press the answer/
end key.

To mute the microphone, slide the 
mute key toward your mouth. To 
unmute the microphone, slide the 
mute key to the opposite direction.