For more information about health, safety, and maintenance, go to the Apple ergonomic website at www.apple.com/about/ergonomics.
Avoid Hearing Damage
Warning: Permanent hearing loss may occur if earbuds or headphones are used at high volume. You can adapt over time to a higher volume of sound that may sound normal but can be damaging to your hearing. If you experience ringing in your ears or muffled speech, then stop listening and have your hearing checked. The louder the volume, the less time required before your hearing can be affected. Hearing experts suggest that to protect your hearing:
åLimit the amount of time you use earbuds or headphones at high volume
åAvoid turning up the volume to block out noisy surroundings
åTurn the volume down if you canÕt hear people speaking to you
82Appendix B Safety, Maintenance, and Ergonomics