Panasonic WH-R17C Operating Instructions Manual page 39

Removing the retention loop
Holding the receiver with your fingers, twist and
pull the retention loop off, as indicated by the
arrow in the figure.
CAUTION
· Use only the supplied retention loop.
Use of other retainers may cause hearing damage.
· Make sure that both the eartip and retention loop
are securely attached to the receiver, respectively.
39