Sony WI-C100 Help Manual page 59

Make the Bluetooth connection from the Bluetooth device.
4
Some devices automatically connect with the headset when the pairing is complete. You will hear the voice
guidance say, "Bluetooth connected".
If they are not connected, see
Hint
The operation above is an example. For more details, refer to the operating instructions supplied with the Bluetooth device.
To delete all Bluetooth pairing information, see
Note
If pairing is not established within 5 minutes, pairing mode is canceled, and the headset turns off. In this case, start the operation
again from step .
Once Bluetooth devices are paired, there is no need to pair them again, except in the following cases:
Pairing information has been deleted after repair, etc.
When a 9th device is paired.
The headset can be paired with up to 8 devices. If a new device is paired after 8 devices are already paired, the registration
information of the paired device with the oldest connection date is overwritten with the information for the new device.
When the pairing information for the headset has been deleted from the Bluetooth device.
When the headset is initialized.
All of the pairing information is deleted. In this case, delete the pairing information for the headset from the connected device
and then pair them again.
The headset can be paired with multiple devices, but can only play music from 1 paired device at a time.
Related Topic
How to make a wireless connection to Bluetooth devices
Connecting to a paired Bluetooth device
Listening to music from a device via Bluetooth connection
Disconnecting Bluetooth connection (after use)
Initializing the headset to restore factory settings
"Connecting to a paired Bluetooth
"Initializing the headset to restore factory
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device".
settings".