Charging
Charge the product with the included USB-C
cable. Plug the USB-C input into the product and
the other end into a charging port. The Battery
Icon will flash on the LCD display to indicate the
battery is charging. The battery icon turns solid
when the product is fully charged.
Only charge your ISOtunes AIR DEFENDER AM/
FM BT with a maximum 5 Volt charger. Using a
charger higher than 5 Volts could be dangerous
and may damage the product. Be careful with
"quick charge" or "turbo charge" chargers, which
often supply 9, 12, or 15 Volts. ISOtunes AIR
DEFENDER AM/FM BT should not be charged at
voltage levels above 5 volts.
American National Standards Institute (ANSI)
S3.19-1974
The level of noise entering a person's ear,
when ISOtunes AIR DEFENDER AM/FM BT is
worn as directed, is closely approximated
by the difference between the A-weighted
environmental noise level and the Noise
Reduction Rating (NRR). Improper fit of
this device will reduce its effectiveness in
attenuating noise. Consult the enclosed
instructions for proper fitting. ISOtunes AIR
DEFENDER AM/FM BT should not be used if a
proper fit is not achieved or maintained.
A1: Frequency (Hz)
A2: Mean Attenuation (dB)
A3: Standard Deviation (dB)
Example:
1. The surrounding noise level measured at
the ear is 100 dB.
2. The NRR of ISOtunes AIR DEFENDER AM/
FM BT is 25 dB.
3. The noise level entering the ear is
approximately equal to 75 dB.
Please note that the NRR is based on the
attenuation of continuous noise and may
not be an accurate indicator of the
protection attainable against impulsive
noise, such as gunfire.
SafeMax™ Technology
This hearing protector incorporates SafeMax™
Technology; therefore, its volume output is
limited to 85 decibels (IT-92).
Cleaning and Maintenance
TRILOGY™ foam ear cushions should be
regularly inspected for deterioration, cracking,
or other damage. TRILOGY™ cushions are
disposable and should be replaced over time.
We recommend replacing your ear cushions
every one to three months or when they become
damaged. Additional AIR DEFENDER AM/FM BT
ear cushions are available at ISOtunes.com.
Ear cushions can be cleaned in between
uses with a damp cloth and water.
• Clean your product by gently wiping them
with a clean, damp cloth with mild soap.
• Do not immerse the product in water.
• Do not use abrasive cleaning solvents to
clean the product.
• If the products get wet from sweat or rain,
please discontinue use, and allow them to dry.
WARNINGS
ISOtunes hearing protectors do an excellent job
of blocking outside noise. As such, they should
NOT be used in environments where users
need to be fully aware of their surroundings
for personal safety reasons. For example, do
NOT use them while driving a car or riding a
motorcycle. Similarly, do NOT use them when
riding a bicycle outside. The user is solely
responsible for ensuring that their product is
used ONLY in safe environments.
This product may be adversely affected by
certain chemical substances, such as bug spray
and sunscreen. Further information may be
sought from the manufacturer.
FCC
FCC ID: 2AJRDIT-92
Caution: The user is cautioned that changes or
modifications not expressly approved by the
party responsible for compliance could void the
users' authority to operate the equipment.
Note: This equipment has been tested and
found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide
reasonable protection against harmful
EN
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