Plantronics M1100 사용자 설명서

The loop of the gel eartip tucks into the back curve of  
your ear for a stable fit. 

Try on the headset. The eartip is positioned to suit most 
people, but you may want to rotate it to best fit your left  
or right ear.

The gel eartip and speaker click into matching grooves  
so the eartip doesn’t move out of place during use.

The loop on the gel eartip should point away from the 
headset. (Do not rotate the eartip too far.)