How do I put the sample device into my ear?
Grasp the removal thread with your thumb and index finger. With the removal thread down, insert the sizer fully into the ear. The sizer should sit entirely in the ear canal, with the removal thread just outside the canal.
Keywords: non-working, non-functional, try, comfort, fit, size, insertion, insert
Source: Sample Pack Guide
User Guide Part #: LBL0023