Nokia Bluetooth Stereo Headset BH-903 - Manual (Page 11)

G e t s t a r t e d
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keys are not locked. When you press one of these keys, use
only one finger.
Before you can start using the headset, you must charge the
battery and pair the headset with a compatible device.
Parts of the headset are magnetic. Metallic materials may
be attracted to the headset. Do not place credit cards or
other magnetic storage media near the headset, because
information stored on them may be erased.
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Chargers
This device is intended for use when supplied with power
from the following chargers: AC-3, AC-4, AC-5, and DC-4.
Warning: Use only chargers approved by Nokia for
use with this particular enhancement. The use of
any other types may invalidate any approval or warranty,
and may be dangerous.
When you disconnect the power cord of any enhancement,
grasp and pull the plug, not the cord.