Samsung EO-SG900 Mode D'emploi page 11

If the Bluetooth speaker is connected to other devices
using an audio cable and Bluetooth simultaneously,
the speaker plays audio from the device connected
via Bluetooth. When playback from the Bluetooth-
connected device stops, the speaker plays audio from
the device connected using an audio cable.
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Using the Bluetooth speaker
When the Bluetooth speaker is connected to a Bluetooth or
NFC-enabled device, you can play audio on the speaker or
use it as a speaker phone. While a device is connected to the
speaker, you can turn on the voice recognition feature of the
connected device by pressing and holding the Play/Stop
button.
The functions that are available when you press and
hold the Play/Stop button may differ depending on the
connected device.
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