V-TAC VT-6315 Manuel D'instructions page 7

3. Turn ON speaker NO.2 (Slave speaker).
4. Press MODE button (Slave speaker) to interchange bluetooth function
(screen message bLUE)
5. Keep pressing "NEXT" button (Slave speaker) until "BLUETOOTH CONNECTED"
voice, The speakers will pair automatically
6. Connect your audio device to the MASTER speaker and enjoy TRUE
WIRELESS STEREO sound.
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