The active noise reduction technology built into these headphones allows them to
reduce annoying low frequency sounds, such as ambient noise found in airplanes,
trains and buses (over 12 dB at 300Hz). These headphones work to reduce the
low frequency ambient sounds without disturbing higher frequency sounds that
are present in the same area (car horns, human voice, telephones and sirens).
Please read these instructions completely before connecting or operating the unit.
Warning:
Read all of these instructions before using this device. To reduce
the risk of fire or electric shock, do not expose this device to rain or
moisture.
To reduce the risk of electrical shock, do not open the cabinet. Refer servicing to
qualified personnel only.
Read these instructions and keep these instructions. Heed all warnings.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions:
This device may not cause harmful interference;
This device must accept any interference received, including interference that may
cause undesired operation.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Caution
1. Prolonged exposure to loud music may cause hearing damage. Hearing experts
advise against continuous extended play and high levels.
2. Do not use while driving motorized vehicles. This may lead to traffic accidents
and is illegal in many areas.
3. If you experience ringing in your ears, reduce volume or discontinue use.
4. Do not drop, sit on or allow the headphones to be immersed in water.
Noise Cancelling
Headphones
User Manual
Model #NCH20
ONE | SAFETY PRECAUTIONS
