Etymotic hf2 Earphones + Headset - Manual (Page 5)

5
Selecting an Eartip
The eartip that is most comfortable is the likely choice, but it
MUST SEAL well in your ear. If you can easily hear others when
the volume is off, you don’t have a good seal. Twist it in deeper,
or choose another eartip.
Foam Glider
When changing eartips make sure the eartip fits
securely on the stem of the earphone.
correct incorrect
3-Flange
standard large
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