Sony DR-BT21IK/B Instruction Manual page 29

 To make a connection by operating Bluetooth mobile
phone
1
Make the Bluetooth connection (HFP or HSP*) from the Bluetooth
mobile phone to the headset.
Refer to the manual supplied with your Bluetooth mobile phone
for operation details.
The list of recognized devices appears on the display of the
Bluetooth mobile phone. The headset is displayed as
"DR-BT21G. "
When you use the Bluetooth mobile phone features both HFP
(Hands-free Profile) and HSP (Headset Profile), set to HFP.
Note
When connecting to a Bluetooth mobile phone which is different from the last
connected one, make the connection following the above procedure.
* For details on profiles, see page 6.
 To make a connection with the last connected Bluetooth
device by operating the headset
1
Press the multi function button.
The headset indicator (blue) and headset indicator (red)
start flashing at the same time, and the headset performs the
connection operation for about 5 seconds.
Note
When listening to music with this headset, a Bluetooth connection cannot be
made with the multi function button.
To adjust the volume
Press the VOL + or – button.
 Tips
 You cannot adjust the volume when not communicating.
 Volume level for calling and listening to music can be set independently.
Even if you change the volume while playing back the music, the volume of a call
does not change.
2
US