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9
Operating time when using the audio cable
The fully charged battery has power for up to 40 hours of active noise
cancellation.
■ Activate or deactivate Bluetooth connectivity
When Bluetooth connectivity is activated, you can connect the headset
to one or two compatible Bluetooth devices.
Even if Bluetooth connectivity is deactivated, you can use the headset
for handling calls and listening to music through the supplied audio
cables.
Activate
To activate Bluetooth connectivity, press and hold the multifunction key
for about 2 seconds. The headset beeps, and the Bluetooth indicator
light briefly flashes green.
The headset tries to connect to the last used mobile device that supports
the HFP Bluetooth profile and the last used music player that supports
the A2DP profile, if the same device does not support both profiles.
When the headset is connected to the device and is ready for use, the
Bluetooth indicator light flashes blue slowly.
If the headset has not been previously paired with any device, it
automatically enters pairing mode. See also “Pair and connect the
headset to a Bluetooth device”, p. 10.
Deactivate
To deactivate Bluetooth connectivity, press and hold the multifunction
key for about 5 seconds. The headset beeps, and the Bluetooth indicator
light briefly flashes red.
If the headset is not connected to a Bluetooth device within about 30
minutes, the headset deactivates Bluetooth connectivity automatically.
Bluetooth connectivity is also deactivated if you connect the CA-143U
or CA-182U audio cable to the headset.