Nokia BH-904 ユーザーズマニュアル

When you mute or unmute the 
microphone, the headset beeps twice.

To switch a call between the headset 
and a compatible connected device, 
press and hold the answer/end key for 
about 2 seconds.

You can have the headset connected 
to two devices at the same time.

By default, the headset can only be 
connected to one device at a time. To 
allow the headset to connect to two 
devices, switch off the headset, and 
press and hold the power key, and 
slide and hold the volume key up for 
about 5 seconds. The blue indicator 
light flashes twice.

To allow the headset to connect to 
only one device, switch off the 
headset, and press and hold the power 
key, and slide and hold the volume key 

down for about 5 seconds. The green 
indicator light flashes twice.

If the headset can connect to two 
devices at the same time and you use 
redialling or voice dialling, the call is 
made on the device that you last used 
to make a call when the headset was 
connected to it.

To clear all the pairing settings from 
the headset, switch off the headset, 
and press and hold the power key and 
the answer/end key at the same time 
for about 5 seconds. The headset 
beeps twice, and the red and green 
indicator lights alternate. After the 
settings are cleared, the headset 
enters pairing mode.

To reset the headset if it stops 
functioning, even though it is charged, 
connect the headset to a charger, and 
press the power key and the answer/
end key at the same time.