Users Manual

● The perception of warning signals in certain workplaces may be affected when
listening to music through the earmuffs.
Notes
● Failure to follow these instructions or misuse of the headset can result in damage
and/or loss.
● If the recommendation given under “Adjusting the Fit” is not followed, the
protection given by the earmuffs will be severely impaired.
● Headband and cushions are non-removable and non-replaceable so do not tear it
off, as it will damage the headset.
● Certain chemical substances may adversely affect this product. Further information
should be sought from the manufacturer
● When hygiene covers are put on to the cushions, it may affect the acoustic
performance of the earmuffs;
● Earmuffs, and in particular the cushions, may deteriorate with use and should be
examined frequently for cracks and deterioration.
Troubleshooting
Defect
Possible Cause
Solution
No Sound
The product is off.
Press and hold the MFB to turn the
product on.
Batteries running
down.
Charge the product
Audio source is not
started.
Start playing the audio source.
Ear tip is blocked
Remove ear tip and check if sound is
coming out of headphone port.
Background
noise
Batteries running down.
Charge the ISOtunes Battery Pack.
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