Sony MHC-V02 Help Manual page 28

Once the 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.
The system is already paired with 8 devices and another device is to be paired.
The system can be paired with up to 8 devices. If a new device is paired after 8 devices have already been paired, the device
that was paired earliest is replaced by the new one.
The pairing information of the system has been deleted from the BLUETOOTH device.
After you reset the system, it may not be able to connect with your iPhone/iPod. In this case, delete the pairing information of
the system on your iPhone/iPod, then perform the pairing operation again.
The system can be paired with multiple devices, but can only play music from one paired device at a time.
Related Topic
Terminating the BLUETOOTH connection (After use)
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