Sony SRS-BTS50 - Manual (Page 68)

Help Guide
Connecting with a smartphone by one touch
By touching the system with a smartphone, the system is turned on automatically
and then proceeds to pairing and BLUETOOTH connection.
1. Touch the system with a smartphone.
Unlock the screen of the smartphone beforehand.
Touch the smartphone on the N marked part of the system.
Keep touching the system with the smartphone until the smartphone reacts.
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