Etymotic Research er-22 用户指南

The ETY-COM headset is supplied with assorted eartips to achieve
an optimal fit.

Cleaning:
1. Carefully remove the eartip from the earphone.
2. Use water and mild soap to remove dirt and 

earwax from the eartip.

3. Rinse and completely dry the eartip.
4. Push the eartip completely on the stem.

Replace the foam eartip as needed.

2-flange 
(small)

2-flange 
(large)

3-flange 
(long stem)

3-flange 
(standard)