Plantronics Voyager 815 - Manual (Page 9)

 Plantronics Voyager 815
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CHOOSE AN EAR bud THAT fITS
When the ear bud fits properly, it should be sealed in your ear so that you
feel a slight amount of resistance when you remove the headset from
your ear.
Remove the headset from your ear.
Gently twist the ear bud while pulling it off the speaker post.
Press a different ear bud onto the speaker post with the stem side of the ear
bud facing downwards.
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