Sony WALKMAN NW-MS11 Operating Instructions Manual page 85

We Want You Listening For A Lifetime
Used wisely, your new sound equipment will
provide a lifetime of fun and enjoyment. Sony and the
Electronic Industries Association's Consumer
Electronics Group recommend you avoid prolonged
exposure to excessive noise. This list of sound levels
is included for your protection.
Decibel
Level
Example
30
Quiet library, soft whispers
40
Living room. refrigerator. bedroom away from
traffic
50
Light traffic, normal conversation, quiet office
60
Air conditioner at 20 feet, sewing machine
70
Vacuum cleaner, hair dryer, noisy restaurant
8o
Average city traffic, garbage disposals, alarm
lrlock at two feet
I-HE FOLLOWING NOISES CAN BE DANGEROUS UNDER
ZONSTANT EXPOSURE
I
Information courtesy of the Deafness Research Foundation.
SONY