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.
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
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.