Sony NWZ-WS613 Help Manual page 164

If passkey input is required, input "0000." A Passkey may be called a "Pass code," a "PIN code," a "PIN number," or
a "Password."
Your Walkman and the iPhone are paired to each other and a connection is made.
Note
Once pairing is successfully completed, you do not have to pair the devices again for future connections between
them.
Operations on the iPhone mentioned above are examples. Refer to the operating instructions of your iPhone for
details.
If you pair your Walkman and a smartphone while using the Remote Commander, the Remote Commander is turned
off. In this case, turn the Remote Commander on again.
Related Topic
Turning the Bluetooth function on/off
Confirming the Bluetooth status by the Bluetooth lamp
Playing music on a smartphone
Connecting with a paired smartphone
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