LEGALITIES
Fitting
R
FIG 2
FIG 1
ANSI S3.19-1974 Table (NRR Table)
EN 352-2:2002 Table (SNR Table)
Models
IT-43
Important
Please read, understand, and follow all safety information.
Fitting
1. Pull the earcups apart (Fig. 1)
2. Check for R and L indicators (Fig. 2)
3. Place the product on your head with the corresponding R and
L sides (Fig. 3)
4. Adjust the earcup position by extending the headband to
ensure a good fit around the ears
Introduction
Thank you for purchasing ISOtunes
noise-isolating headphones. These headphones have been
FIG 3
B5:
SNR: 27 dB
H= 29 dB
M= 24 dB
L= 19 dB
APVf=MF-SF9 (dB)
Sport DEFY Slim professional
®
specifically 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.
Powering On/Off
To power on, turn the Power/Tactical Sound Control™ Dial up (you
will hear and feel a physical click). To power off, turn the Power/
Tactical Sound Control Dial all the way down (you will hear and
feel a physical click).
Pairing to your Device
After powering on, press and hold the Multifunction Button
to enable Bluetooth - you will hear "Bluetooth On" and the
headphones will automatically enter Pairing Mode. Look for quick
blue flashes on the LED Indicator Light ato indicate pairing mode.
Open the Bluetooth settings on your device. Search for "ISOtunes
DEFY Slim". Pair and connect. You will hear "Bluetooth Connected"
once connected.
Charging
The DEFY Slim operates using two standard AAA batteries
(included). If you experience any issues, try removing the batteries
and inserting new ones.
Noise Attenuation
This product has been tested to the European Safety Standard
EN352-1:2002 and the ANSI S3.19-1974 standard for a hearing
protector, with a Single Number Rating (SNR) of 27 dB and a Noise
Reduction Rating (NRR) of 21 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®
Sport DEFY Slim headphones are 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
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