Operation Manual

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To change the acoustic lters proceed as follows:
a. First of all remove the ear tips (foam or
silicone) by holding them in the middle and
pulling them slowly until they come loose.
b. Remove the lter from the earpiece
by pushing the changing tool with the
threaded end into the used acoustic
lter, turn it to the right to screw it and
pull the used lter straight out.
Preferably use the threaded end of the
changing tool to remove the lters from
the sound tube.
c. Dispose of any soiled or damaged
acoustic lters. To reuse the lter in the
future, insert it straight in an empty
slot in the lter box, then turn the
changing tool to the left to unscrew
and remove it.
d. To place a new acoustic lter in the
earphones, press the split end of the
changing tool into the lter ring and
pull it gently out vertically.
Preferably use the split end of the
changing tool to remove the lters
from the lter box.