Sony DR-BTN200 Help Manual page 52

Follow the on-screen instructions to complete the connection.
Refer to the manual of the smartphone for the designated location to be
touched on the smartphone.
Note
When the NFC switch is set to OFF, you cannot make a connection. You may
set the switch to OFF to prevent the headset from turning on or connecting with
other devices if you touch the headset with other device unintentionally.
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