Apple MC413LL/A manual Avoid Hearing Damage, Understanding 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, you should:

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

Understanding Ergonomics

Here are some tips for setting up a healthy work environment.

Chair

An adjustable chair that provides firm, comfortable support is best. Adjust the height of the chair so that your thighs are horizontal and your feet are flat on the floor. The back of the chair should support your lower back (lumbar region). Follow the manufacturerÕs instructions for adjusting the backrest to fit your body properly.

Appendix B Safety, Use, and Care Information

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