Apple iPod touch iOS 4.3 - Manual (Page 12)

Volume Buttons
When you listen to songs, movies, or other media, the buttons on the side of
iPod touch adjust the audio volume. Otherwise, the buttons control the volume for
alerts and other sound effects.
WARNING: For important information about avoiding hearing loss, see the Important
Product Information Guide at www.apple.com/support/manuals/ipodtouch.
To adjust the volume, use the buttons on the side of iPod touch.
Volume
up
Volume
down
To set a volume limit for music and videos on iPod touch, see “Music” on page 167.
12 Chapter 1 iPod touch at a Glance