ISOtunes FREE 2.0 IT-72 User manual

ISOtunes®FREE 2.0
Wireless Earbuds
IT-72, IT-73, IT-74

ANSI S3.19-1974 Table (NRR Table)
FIG 1 FIG 3FIG 2 FIG 4
EN 352-2:2002 Table (SNR Table)
SNR (dB) = 32.0 H84 (dB) = 32 dB M84 (dB) = 30 dB L84 (dB) = 28 dB
SNR (dB) = 33.0 H84 (dB) = 32 dB M84 (dB) = 31 dB L84 (dB) = 29 dB
Short Eartips
Short Eartips
Tall Eartips
Tall Eartips

EN 4-5
DA X-X
DE X-X
ES X-X
FI X-X
FR X-X
IT X-X
NL X-X
NO X-X
SV X-X
ISOtunes®FREE Aware
Wireless Earbuds

4
Important
Please read, understand, and follow
all safety information.
Models
IT-73, IT-74 : ISOtunes FREE 2.0
IT-72 : ISOtunes FREE 2.0 EN 352
Full manual can be found at
ISOtunes.com/manuals
The ISOtunes FREE 2.0 comes with 3 sets of
TRILOGY™ tall foam eartips (S,M,L), and
3 sets of double ange silicone eartips (S, M,L).
Choose the size that ts best in your ear canal.
Remember, the snugger the t, the better
the noise reduction. The silicone eartips are
not tested for noise-attenuation and should
not be used in noisy environments.
Fitting
1. Carefully roll the foam eartip
on the stem/sound port.
2. Insert the eartip into your ear
as deeply as comfortable.
3. Slightly rotate earbud until it is
secure in the bowl of your ear.
4. Make the earbud rest tightly next
to your inner ear edge.
Introduction
Thank you for purchasing ISOtunes® FREE
2.0 Bluetooth®earbuds. These earbuds have
been specically designed for use in noisy
environments – allowing you to block out much
of the surrounding noise so that you
can listen to your music or talk on the phone
with less interruption.
Controls
[See the Quick Start Guide]
Power On/O
Method 1
Power ON: Remove earbuds from charging case.
Power OFF: Place earbuds into charging case.
Method 2
Power ON: In OFF mode, press and hold
multi-function button (MFB) for 3 seconds.
Power OFF: In ON mode, press and hold MFB
for 6 seconds.
Bluetooth®Pairing
After powering on, the earbuds will
automatically enter Bluetooth® Pairing Mode.
Look for quick red and blue ashes from the
earbud as a conrmation. Open the Bluetooth®
settings on your device. Search for “ISOtunes
FREE 2.0”. Pair and connect. You will hear
“Bluetooth®Connected” once connected.
Charging
There are three batteries to charge:
1. Charging Case Battery
2. Left Earbud Battery
3. Right Earbud Battery
Charging the Case
Insert USB type C charging cable into the
charging case. The charging case battery
indicator light will start ashing to indicate
charge level.
Charging the Earbuds
Place earbuds into the charging case. The
earbuds’ red indicator light should be solid red,
indicating that the earbuds are charging.
Only charge your ISOtunes FREE 2.0 with a
Maximum 5 Volt charger. Using a charger higher
than 5 Volts could be dangerous and may
damage your ISOtunes product. Be especially
careful with “quick charge” or “turbo charge”
chargers, which often supply 9, 12, or 15 Volts.
Your ISOtunes FREE 2.0 cannot be charged at
voltage levels above 5 volts.
Noise Attenuation
This product has been tested to the European
Safety Standard EN 352-2:2020 and the ANSI
S3.19-1974 standard for a hearing protector,
with a Single Number Rating (SNR) of 32 dB
and a Noise Reduction Rating (NRR) of 25 dB.
Full testing details are available in the Noise
Attenuation section of this booklet.
ANSI S3.19-1974
The level of noise entering a person’s ear,
when ISOtunes® FREE 2.0 earbuds are
worn as directed, is closely approximated
by the dierence between the A-weighted
environmental noise level and the Noise
Reduction Rating (NRR). Improper t of
this device will reduce its eectiveness in
attenuating noise. Consult the enclosed
EN

5
instructions for proper tting.
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® FREE 2.0 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 gunre.
EN 352
B1: Frequency (Hz)
B2: Mean Attenuation (dB)
B3: Standard Deviation (dB)
B4: Assumed Protection Value (APV) (dB
H = Hearing protection estimation for high
frequency sounds (f ≥ 2000Hz)
M = Hearing protection estimation for
medium frequency sounds (500 Hz <
f < 2000Hz)
L = Hearing protection estimation for low
frequency sounds (f ≤ 500Hz)
SafeMax™ Technology
ISOtunes® FREE 2.0 incorporates SafeMax™
Technology, therefore its volume output has
been limited to 85 decibels (IT-73 & IT-74),
or 79 decibels (IT-72) . ISOtunes® devices
with SafeMax™ Technology are OSHA and
ANSI compliant.
Cleaning and Maintenance
• Clean your ISOtunes FREE 2.0 by gently wiping
them with a clean, damp cloth with mild soap.
• Do not immerse the earbuds in water.
• Do not use abrasive cleaning solvents to clean
the earbuds.
If the earbuds get wet from sweat or rain, please
discontinue use and allow them to dry.
WARNINGS
ISOtunes® FREE 2.0 does an excellent job of
blocking outside noise. As such, ISOtunes®
FREE 2.0 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 ISOtunes® FREE
2.0 is used ONLY in safe environments.
Additional Notes
ISOtunes®FREE 2.0 is compliant with Bluetooth®
V5.2. We do not guarantee compatibility of all
functions on every Bluetooth®-enabled device.
Please check your device’s user manual for
compatibility and functionality.
For additional information or questions about
ISOtunes® products or spares and accessories,
please contact our support team.
FCC
Caution: The user is cautioned that changes or
modications not expressly approved by the
party responsible for compliance could void the
users’ authority to operate the equipment.
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any
interference received, including interference
that may cause undesired operation.
UK & Europe
uk-eurosuppor[email protected]
North America
[e-mail]
1-844-396-3737
Monday-Friday 9-5 ET
XXXX
EN
FCC ID: 2AJRDIT-72

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 interference in a
residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help