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3.9
Parents should monitor their children's use of video games
or other features that incorporate flashing lights on the
phones. All persons should discontinue use and consult a
doctor if any of the following symptoms occur: convulsion,
eye or muscle twitching, loss of awareness, involuntary
movements, or disorientation.
To limit the likelihood of such symptoms, please take the
following safety precautions:
• Do not play or use a flashing-lights feature if you are
tired or need sleep.
• Take a minimum of a 15-minute break hourly.
• Play in a room in which all lights are on.
• Play at the farthest distance possible from the screen.
3.9 Caution About High Volume Usage
Listening at full volume to music or voice through
a headset may damage your hearing.
12
Safety Information
Caution About High Volume Usage
3.10 Repetitive Motion Injuries
When you repetitively perform actions such as pressing keys
or entering finger-written characters, you may experience
occasional discomfort in your hands, arms, shoulders, neck,
or other parts of your body. Follow these instructions to
avoid problems such as tendonitis, carpal tunnel syndrome,
or other musculoskeletal disorders:
• Take a minimum 15-minute break every hour of game
playing.
• If your hands, wrists, or arms become tired or sore
while playing, stop and rest for several hours before
playing again.
• If you continue to have sore hands, wrists, or arms
during or after play, stop playing and see a doctor.
1.
The information provided in this document supersedes the
general safety information in user's guides published prior to
January 28, 2005.
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