Sony MDR-1RBT - Manual (Page 46)

The headset may be connected with the BLUETOOTH device as soon as you
turn on both devices.
2. Make the BLUETOOTH connection from the BLUETOOTH device.
Tip
If you have previously connected this BLUETOOTH device, you can make an
HFP/HSP connection by pressing the button, or an A2DP connection by
pressing the button, when the headset is turned on.
Copyright 2012 Sony Corporation
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