AUSounds STREAM Manuel D'utilisation page 6

BLUETOOTH FEATURES
Automatic connection
The AU-Stream stores your last connected device in memory. If your
earbuds are disconnected due to being out of range, they will
automatically reconnect once in range. If it is disconnected for more
than 30 minutes, select the Bluetooth name in your device to
connect again. If it is disconnected for more than 2 hours, it will
automatically shut down.
Automatically switch between left and right ear
Removing either the left or right earbud from the charging case will
switch the mode to single ear state and only play audio through the
remaining active earbud.
Reset
Place the earbuds in the charging case, press and hold the touch
control panel for 6 sec. Once the indicator light flashes three times,
take out the earbuds to enter pairing status. (Andriod devices vary
by system)