Sony MDR-1RBT - Manual (Page 27)

RESET button [Details]
Press the button with a pointing object, such as a pin, to reset the headset.
INPUT jack [Details]
Connect a music player, etc. to this jack by using the supplied cord. Make sure
that you insert the plug of the music player until it clicks. Otherwise, you may not
hear the sound normally.
Microphone
Copyright 2012 Sony Corporation
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