Headset
You can connect a compatible headset or compatible
headphones to your device. Nokia headsets with music
controls can also be used, but the device does not support
the music controls.
Warning:
When you use the headset, your ability to hear outside
sounds may be affected. Do not use the headset where it can
endanger your safety.
Do not connect products that create an output signal as this
may cause damage to the device. Do not connect any voltage
source to the Nokia AV Connector.
When connecting any external device or any headset, other
than those approved by Nokia for use with this device, to the
Nokia AV Connector, pay special attention to volume levels.