119MORE INFORMATIONThe amount of sound produced by a portable audiodevice varies depending on the nature of the sound, thedevice, the device settings, and the headphones. Youshould follow some commonsense recommendationswhen using any portable audio device:• Set the volume in a quiet environment and select thelowest volume at which you can hear adequately.• When using headphones, turn the volume down ifyou cannot hear the people speaking near you orif the person sitting next to you can hear what youare listening to.• Do not turn the volume up to block out noisysurroundings. If you choose to listen to yourportable device in a noisy environment, use noise-cancelling headphones to block out backgroundenvironmental noise.• Limit the amount of time you listen. As the volumeincreases, less time is required before your hearingcould be affected.