Sony E 55-210mm f/4.5-6.3 OSS Lens (Black) - Manual (Page 40)

With the charging case lid open, press and hold the pairing button on the back of the charging case for about 5
seconds or more.
Note
The headset does not enter pairing mode with the charging case lid closed.
The indicator (blue) on the charging case repeatedly flashes twice in a row and the headset goes into pairing
mode.
You can remove the headset from the charging case after entering pairing mode.
When you are wearing the headset, you will hear a notification sound from both headset units at the same time,
and you will hear a voice guidance say “Pairing”. When you are wearing only one headset unit, you will hear the
notification sound and voice guidance from the headset unit you are wearing.
2.
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Unlock the screen of the Android smartphone if it is locked. 2
Find the headset on the Android smartphone. 3
Select [Settings] - [Device connection] - [Bluetooth]. 1.
Touch the switch to turn on the Bluetooth function. 2.
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