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Printed in China
Publ. 10/09, A01
Instruction manual
OMX 680 SPORTS


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1
Important safety instructions
In order to prevent damage to health:
Set the volume to a low level before
inserting the earphones into your ears.
Avoid listening at high volume levels
for long periods of time.
The earphones contain magnets that
generate a magnetic field which could
cause interference with cardiac pace-
makers and implanted defibrillators.
Keep the earphones at least 1.2"
(3 cm) from cardiac pacemakers or
implanted defibrillators.
In order to prevent accidents:
Do not wear the earphones in an envi-
ronment that requires your special
attention (e.g. in traffic).
Keep the earphones and accessory
parts out of reach of children who
could swallow smaller pieces.
In order to prevent damage to the
earphones:
Do not heat the earphones (hairdryer,
heating, extended exposure to sun-
light, etc.).
Do not store wet earphones in a bag.
Specifications
Frequency response 18 to 20,000 Hz
SPL
120 dB
(1kHz/1Vrms)
Impedance
16
Weight
Approx. 16 g


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2
Delivery includes
1pair of OMX 680 Sports clip-on
earphones
1 extension cable with volume control
1cable clip
1 storage pouch
1 instruction manual
Inserting into the ears
To ensure the best possible sound
performance, use the supplied ear pads.
Place the earphones as close as possible
in front of your ear canals and make sure
the earphones are snuggly seated.
1 pair of foam ear
pads
2 pairs of ear sleeves
(size S and L)
2 pairs of air cushion adapters
(size S and L)
Accessory
parts
are
available
from your Sennheiser partner. To
find
your
Sennheiser
partner,
please
visit
our
website
at
www.sennheiser.com > Service &
Support > Service Partners.
WARNING Hearing damage due to
high volumes!
Listening at high volume
levels for long periods can
lead to permanent hearing
defects.
Avoid listening at high
volume levels for long
periods of time.


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3
Choose between the ear sleeves with
the foam ear pads (
a) or the air
cushion adapters (
b) and attach them
to the earphones.
Adjust the ear clips to fit your ears and
put the earphones on.
a
S/L
b
S/L
2
3
1


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4
Optimum cable routing
Ensure that the cable is routed close to
the body, but that your freedom of
movement is not restricted.
To relieve cable strain and reduce body
sound:
Use the supplied cable clip.
Adjusting the volume
Use the supplied extension cable with
volume control if you want to wear
your audio source e.g. attached to
your waistband.
LR