Optimus CTR-107 - Manual (Page 12)

12
USING THE EARPHONE
To listen in privacy, insert the supplied earphone’s 1 / 8 -
inch plug into the EAR jack.
Note: Connecting the earphone automatically discon-
nects the built-in speaker.
Listening Safely
To protect your hearing, follow these guidelines when
you use the earphone.
• Set the volume to the lowest setting before you
begin listening. After you begin listening, adjust
the volume to a comfortable level.
• Do not listen at extremely high volume levels.
Extended high volume listening can lead to per-
manent hearing loss.
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