Tobii Pro Pro Glasses 3 Technical specifications

Pro Glasses 3
Product Description

Pro Glasses 3 Product Description
v 1.4
5-2021
All rights reserved.
Copyright © Tobii Pro AB (publ)
The information contained in this document is proprietary to
Tobii Pro AB. Any reproduction in part or whole without prior written
authorization by Tobii Pro AB is prohibited.
Products that are referred to in this document may be either trade-
marks and/or registered trademarks of the respective owners. The
publisher and the author make no claim to these trademarks.
While every precaution has been taken in the preparation of this
document, the publisher and the author assume no responsibility for
errors or omissions, or for damages resulting from the use of
information contained in this document or from the use of programs
and source code that may accompany it. In no event shall the
publisher and the author be liable for any loss of profit or any other
commercial damage caused or alleged to have been caused directly
or indirectly by this document.
Content subject to change without notice.
Please visit Tobii Pro Connect for updated versions of this document.

Pro Glasses 3 Product Description v 1.4 3
Table of Contents
1 Introduction 5
1.1 Intended use 5
1.2 Documentation 5
1.3 Symbols used in this document 6
2 System Overview 7
2.1 Pro Glasses 3 packages 7
2.2 Optional accessories 8
2.3 System components 8
2.4 Head unit 9
2.5 Recording unit 10
2.6 Pro Glasses 3 controller application 11
3 Technical Specifications 12
3.1 Eye tracking 12
3.2 Head unit 12
3.3 Recording unit 12
3.4 Tobii Pro Glasses 3 controller application requirements 13
3.5 Compatible Android devices 13
4 Safety 14
4.1 General precautions 14
4.2 Usage warning 14
4.3 Emergency 15
4.4 Child warning 15
4.5 Infrared warning 15
4.6 Photosensitivity/epilepsy warning 15
4.7 Mechanical shock 16
4.8 Bending 16
4.9 Do not open or disassemble 16
4.10 Connectors 16
4.11 Head unit cable 16
4.12 Environment 16
4.13 Component connection safety 17
4.14 Battery safety 17
4.15 Wireless warning 18
4.16 Transportation 18
4.17 Accessories 18
4.18 Cleaning 18
4.19 California Proposition 65 warnings 19
5 Compliance 20
5.1 EU Compliance 20
5.1.1 Conformity with EU directives 20
5.1.2 CE marking 20
5.1.3 WEEE marking 20
5.2 United States and Canada compliance 20
5.2.1 FCC interference and Industry Canada statement 20
5.2.2 ETL compliance 21

Pro Glasses 3 Product Description v 1.4 4
5.2.3 UL compliance 21
5.3 Electromagnetic compatibility compliance 21
5.4 Safety compliance 21
5.5 China compliance 22
5.6 Japan compliance 22
5.7 Korea compliance 22
6 Product Care 23
6.1 Operational environment 23
6.2 Transportation 23
6.3 Storage 23
6.4 Cleaning 23
6.5 Disposal of the eye tracker 24
Appendix A Support, Learning Center, and Warranty 25
A1 Customer Support 25
A1.1 Get help online 25
A2 Learning Center 25
A3 Warranty information 25
Appendix B Limitations and considerations 26
B1 Intended use 26
B2 Light conditions 26
B3 Eyelashes 26
B4 Droopy eyelids 26

Pro Glasses 3 Product Description v 1.4 5
1 Introduction
Tobii Pro Glasses 3 is designed to enable easy, precise, and efficient collection of eye tracking
data in a wide variety of research scenarios. The discreet, ultra-lightweight design ensures nat-
ural behavior and research validity in both qualitative and quantitative situations. Accurate data
and robust eye tracking capabilities can be relied on in uncontrolled situations and real-world
environments.
1.1 Intended use
Tobii Pro Glasses 3 is a wearable eye tracker for academic, commercial, and industrial use for the
capture of truly objective and deep insights into human behavior in a real-world environment. Pro
Glasses 3 is designed to capture what the wearer is viewing while providing robust and accurate
eye-tracking data. The complete Pro Glasses 3 product package consists of a head unit, a record-
ing unit, and the Tobii Pro Glasses 3 controller application installed on an external device.
The product should only be used as described in the Pro Glasses 3 User Manual. Please read the
User Manual and other supplied documentation thoroughly before using the product.
This product is continuously being developed and refined. Visit Tobii Pro Connect for the most
recent specifications for Pro Glasses 3 and for the latest version of this document.
1.2 Documentation
Further documentation is available for viewing and download on Tobii Pro Connect.
The following documents are available:

Pro Glasses 3 Product Description v 1.4 6
lPro Glasses 3 Product Description
lPro Glasses 3 Field Guide
lPro Glasses 3 Safety and Compliance
lPro Glasses 3 Developer Guide
1.3 Symbols used in this document
Three different symbols are used in this document:
The Information symbol means something is important or needs special attention.
The Tip symbol denotes additional information that can make a process or function
easier.
The Warning symbol means there is a possible risk of harm if the warning is ignored.

Pro Glasses 3 Product Description v 1.4 7
2 System Overview
2.1 Pro Glasses 3 packages
Pro Glasses 3 is sold in four different packages. The table below details the specific features
available in each package.
Components
Pro
Glasses
Cabled
50
Pro
Glasses
Cabled
100
Pro
Glasses
Wireless
50
Pro
Glasses
Wireless
100
Pro Glasses 3 controller
application
● ● ● ●
50 Hz ● ●
100 Hz ● ●
WLAN functionality ● ●
Basic support ● ● ● ●

Pro Glasses 3 Product Description v 1.4 8
2.2 Optional accessories
The following optional components can be added to the Pro Glasses 3 system. Learn more on
tobiipro.com.
Component Description
Corrective
Lenses
Snap-on corrective lenses for Tobii Pro Glasses 3 used with people who wear
prescription lenses. The Corrective Lenses accessory for Pro Glasses 3 is a set
of attachable lenses to correct both nearsightedness and farsightedness. This
accessory allows you to include a larger cross-section of the population in your
research.
Safety
Lenses
This accessory package contains two lenses (clear and tinted) that are compliant
with safety glass standards to support research in bright environments and loc-
ations requiring eye protection.
2.3 System components
The Pro Glasses 3 system is comprised of the head unit, recording unit, and the Pro Glasses 3
controller application. Each component is briefly described below. In addition, Tobii Pro Lab soft-
ware (purchased separately) can be used for further analysis of eye tracking data.
The Pro Glasses 3 system:
1. The head unit, comprised of wearable eye tracking glasses.
2. A recording unit, connected to the head unit via a head unit cable. The recording unit holds
the battery and stores the recorded data on a SD card. The recording unit is controlled from
a device running Pro Glasses 3 controller application.
3. Pro Glasses 3 controller application is used to manage the participants, start and stop
recordings, as well as to view real time and recorded video and eye-tracking data.
Pro Glasses 3 controller application is designed to be installed and used on spe-
cific operating systems and processors. The application should not be installed
on any other type of devices
4. A computer running the specified operating systems; or an Android device running version
9 or later; with Pro Glasses 3 controller application installed.
Pro Glasses 3 controller application connects to the eye tracker through an network con-
nection (either wireless or wired).
5. Tobii Pro Lab (purchased separately) installed on a Windows computer. Any eye tracking
analysis beyond qualitative analysis of eye tracking session replay, is carried out using
Tobii Pro Lab.
The Pro Glasses 3 controller application is designed to be used only with Pro
Glasses 3. No other type of eye trackers can or should be used together with the
Pro Glasses 3 controller application.

Pro Glasses 3 Product Description v 1.4 9
2.4 Head unit
The head unit is a highly sophisticated measuring device. It consists of several very sensitive
sensors and must be cared for correctly. For more information, read Product Care.
The head unit consists of the following parts:
Part Description
1. Infrared illuminators (x 8 per
eye)
Illuminates the eyes to assist the eye-tracking sensors
2. Head unit cable Connects to the recording unit to save collected data
3. High-definition scene cam-
era
Captures a Full HD video of what is in front of the participant
4. Microphone Picks up sounds from the participant and their immediate sur-
roundings
5. Eye-tracking cameras (x 2
per eye)
Records eye orientation and movements

Pro Glasses 3 Product Description v 1.4 10
Part Description
6. Accessory attachment Used to attach some of the optional accessories, for example
the Safety Lens
7. Nose pad Additional nose pads can be used to change sizing
2.5 Recording unit
The recording unit is a small computer that controls the head unit. It records and stores eye-track-
ing data, sounds, and scene camera video on a removable SD card. The recording unit carries a
replaceable and rechargeable Li-ion battery that supplies power to both the recording unit and the
head unit. The recording unit has several connectors and a power button and is controlled from
Pro Glasses 3 controller application.
The recording unit consists of the following parts:
Part Description
1. Head unit con-
nector
Connects to the head unit cable
2. Micro USB con-
nector
Connects to USB charger for powering the unit and charging the battery
3. 3.5 mm con-
nector for data syn-
chronization
TTL pulse for synchronization with external data sources

Pro Glasses 3 Product Description v 1.4 11
4. Power button
and LED power
indicator
Touch button that turns the recording unit on and off. LED power indicator
indicates power state and remaining battery power
5. SD card Activity
LED
Indicates if SD card is present and if the recording unit is currently sav-
ing data to the SD card
6. Connection
status LED
Indicates connection to the head unit.
7. LAN port Connects to a device running the Pro Glasses 3 controller application, via
the supplied Ethernet cable. The recording unit can also be connected to a
device via WLAN*.
8. SD card slot Slot for SD card
9. Belt clip Attaches the recording unit to participant’s belt
10. Battery com-
partment
Holds the Li-ion battery
* Not available in the Tobii Pro Glasses 3 Live View Package
The Pro Glasses 3 package contains an external SD card reader for use with com-
puters that are not equipped with an internal SD card reader. For installation instruc-
tions, see the documentation in the SD card reader’s package or the manufacturer’s
website.
2.6 Pro Glasses 3 controller application
The Pro Glasses 3 controller application software is used to manage participants and recordings
made using the recording unit. It can perform the following functions:
nAdd participants
nManage recordings
nLive view of ongoing recordings
nInstant replay of recordings
nOne point calibration

Pro Glasses 3 Product Description v 1.4 12
3 Technical Specifications
3.1 Eye tracking
Eye tracking technique Corneal reflection, dark pupil, stereo geometry
Binocular eye tracking Yes
Sampling rate 50 Hz or 100 Hz
Calibration procedure One point
Parallax compensation tool Automatic
Slippage compensation Yes, 3D eye tracking model
Pupil measurement Yes, absolute measure
Gaze recovery time 1 frame (immediate)
Blink recovery time 1 frame (immediate)
3.2 Head unit
Material Grilamid plastic, stainless steel, optical grade plastic
Nose pad Grilamid plastic, with clip on attachments
Scene camera, video resolution 1920 × 1080 at 25 fps
Scene camera, video format H.264
Scene camera, field of view (diagonal) 106 deg. 16:9 format
Scene camera, field of view (hori-
zontal and vertical)
95 deg. horizontal / 63 deg. vertical
Weight 76.5 grams including cable
Frame dimensions (width ×depth
×height)
153 ×168 ×51 mm
Cable length 1200 mm
Audio 16 bit mono, integrated microphone
Design characteristics Light weight and discreet
Number of eye tracking sensors 4 sensors (2 per eye)
Fixed geometry Yes
Sensors ST™ LSM9DS1 sensors: Gyroscope and Accel-
erometer (sampled at 100Hz); Magnetometer:
(sampled at 10 Hz)
3.3 Recording unit
Battery recording time 105 min.
Battery type Rechargeable 18650 Li-ion, Capacity: 3 400 mAh
Storage media SD (SDXC, SDHC) card
Connectors Micro USB, RJ45 (Ethernet), 3.5 mm jack (sync
port), head unit connector
Dimensions (height x width x depth) 130 x 85 x 27 mm

Pro Glasses 3 Product Description v 1.4 13
Weight 312 grams
Sync Port 3.5 mm jack (TTL signal)
3.4 Tobii Pro Glasses 3 controller application requirements
Operating sys-
tem
Windows® 10 (update version 2004)
or
Mac OS 11 (Big Sur)*
*The controller application can work on Mac OS X
10.13 to 10.15 but this is not officially supported.
Android™ 9 or later
Processor 6th Generation Intel® Core™ i5 (Dual core) Snapdragon 835 or equi-
valent
Memory 8 GB RAM 6 GB RAM
There are many different kinds of Android devices, with a wide range of hardware configurations.
Most devices that meet the minimum requirements should work with the Glasses 3 controller
application but Tobii Pro cannot guarantee it.
The following table lists the Android devices Tobii Pro has tested and verified will work.
Manufacturer Device
Samsung Galaxy Tab S5e
Samsung Galaxy S10
Google Pixel 4 XL
3.5 Compatible Android devices
There is a very wide range of Android devices available on the market, each with its own unique
combination of hardware specifications. While most devices meeting the minimum requirements
should work with the Pro Glasses 3 Controller application,Tobii Pro cannot guarantee it. The fol-
lowing table lists the Android devices Tobii Pro has tested and verified.
Manufacturer Device
OnePlus 6t (Android 10)
Samsung Galaxy S8 (Android 9)
Google Pixel 4XLs (Android 10 and Android 11)
Huawei devices are not supported due to incompatibility with the Google services.

Pro Glasses 3 Product Description v 1.4 14
4 Safety
4.1 General precautions
The Pro Glasses 3 system is described in the Pro Glasses 3 User Manual and must be
used according to the manufacturer’s instructions. Connecting any other component to
the system, or using the components improperly can cause injury to the user or dam-
age to the equipment and is done so entirely at the user’s own risk.
The Pro Glasses 3 system must be fitted on the test participant according to instruc-
tions in the Pro Glasses 3 User Manual. Tobii Pro or its agents are not liable for dam-
age or injuries to a person or their property due to a Pro Glasses 3 eye tracker system
in any configuration being dropped. Fitting the Pro Glasses 3 onto a test participant is
done entirely at the user’s own risk.
The Pro Glasses 3 system is to be used for research purposes only. Be aware that due
to the low, but possible risk of failure or distraction, the Pro Glasses 3 should not be
relied upon or used in dangerous or otherwise critical situations.
Tobii Pro Glasses 3 head unit is equipped with a head strap to enable tighter mounting
of the eye tracker onto the wearer’s head. Neither Tobii Pro nor its agents are liable for
damages or injuries to a person or their property caused by the Pro Glasses 3 head
unit head strap.
4.2 Usage warning
The Pro Glasses 3 system is composed of several components as described in the
User’s Manual and should be used according to manufacturer instructions. Con-
necting, or by other means using any other component than advised in the User’s
Manual may damage or injure a person, their property or recorded data, and is done
entirely at the user’s own risk.
Pro Glasses 3 eye tracker should be fitted on the test participant according to man-
ufacturer instructions. Tobii Pro or its agents are not liable for damage or injuries to a
person or their property due to a Pro Glasses 3 eye tracker being dropped in any con-
figuration. Fitting the Pro Glasses 3 onto a test participant is done entirely at the user’s
own risk.
Pro Glasses 3 head unit is equipped with a head strap to enable tighter mounting of
the eye tracker onto the wearer’s head. Neither Tobii Pro nor its agents are liable for
damages or injuries to a person or their property caused by the Pro Glasses 3 head
unit head strap.

Pro Glasses 3 Product Description v 1.4 15
4.3 Emergency
The Pro Glasses 3 system is to be used for research purposes only. Be aware that due
to the low, but possible risk of failure or distraction, the Pro Glasses 3 should not be
relied upon or used in dangerous or otherwise critical situations.
4.4 Child warning
The Pro Glasses 3 is an advanced computer system and electronic device that is com-
posed of numerous separate, assembled parts. These parts have the possibility of
becoming separated from the device, constituting a potential choking hazard or other
danger to a child. Young children should not have access to, or use, the device without
parental or guardian supervision.
4.5 Infrared warning
Do not use the Pro Glasses 3 system when in the vicinity of devices that are sus-
ceptible to Infrared (IR) light. When activated, the Pro Glasses 3 head unit emits IR
light, which can affect certain medical devices and other devices that are susceptible
to disturbance by IR light and/or radiation.
4.6 Photosensitivity/epilepsy warning
Some people with photosensitive epilepsy are susceptible to epileptic seizures or loss
of consciousness when exposed to certain flashing lights or light patterns in everyday
life. This may happen even if the person has no medical history of epilepsy or has
never had any epileptic seizures.
A person with photosensitive epilepsy would also be likely to have problems with TV
screens, some arcade games, and flickering fluorescent bulbs. These people may
have a seizure while watching certain images or patterns on a monitor, or even when
exposed to the light sources of an eye tracker. It is estimated that about 3-5% of
people with epilepsy have this type of photosensitive epilepsy. Many people with pho-
tosensitive epilepsy experience an "aura" or feel odd sensations before the seizure
occurs. If the participant starts to feel odd during use, have them remove the Pro
Glasses 3 head unit immediately.

Pro Glasses 3 Product Description v 1.4 16
4.7 Mechanical shock
The Pro Glasses 3 system is a delicate measuring instrument used for research pur-
poses and should be treated with care at all times. To avoid breaking or damaging the
internal electronic circuits, do not drop, knock, or shake the device. Eye tracking qual-
ity or accuracy can be seriously affected if the Pro Glasses 3 head unit or recording
unit are dropped. If the eye tracker is exposed to mechanical shock, for example, when
dropped, do not try to start it or connect it to a power source. Contact Tobii Pro Support
for instructions.
4.8 Bending
To avoid breaking or damaging the internal electronic circuits, do not bend any part of
the eye-tracking system. Eye-tracking quality or accuracy can be seriously affected if
the Pro Glasses 3 head unit or recording unit has been bent.
4.9 Do not open or disassemble
Do not open or disassemble the Pro Glasses 3 head unit or the recording unit. Non-
compliance will result in loss of warranty! There are no user serviceable components
inside. Contact Tobii Pro Technical Support if your Pro Glasses 3 system is not work-
ing properly.
4.10 Connectors
The Pro Glasses 3 head unit and recording unit have numerous external interfaces
(connectors). Connecting any other device or connector than those intended may
cause personal injuries and/or damage the Pro Glasses. Tobii Pro or its agents are not
liable for any damages or injuries to a person or their property due to connecting unin-
tended connectors.
4.11 Head unit cable
The head unit cable connected to the head unit must only be used to connect to the
recording unit. Do not use the head unit cable for any other purpose or for connecting
to any other devices. Tobii Pro or its agents are not liable for any damages or injuries
to a person or property due to incorrect use of the head unit cable.
4.12 Environment
Avoid any exposure to direct sunlight as this will affect eye tracking quality and longer
exposure can overheat the equipment. Avoid prolonged exposure to any liquids, gels,
moist, rain, or sweat. Do not use the eye tracker underwater.

Pro Glasses 3 Product Description v 1.4 17
Do not place or use the equipment in places subject to extreme temperatures and
humidity, such as on top of and or near a heating element, in a hot or damp room, or in
a hot automobile in the sun. Usage temperature: 5℃ to +45℃ / 23℉ to 113℉
4.13 Component connection safety
The Tobii Pro Glasses 3 head unit is designed to connect only to the Tobii Pro Glasses
3 recording unit and should not be connected to any other device.
The recording unit is designed to connect to the head unit, a device running specific
operating systems, with the Glasses 3 controller application installed. The recording
unit should not be connected to any other devices.
4.14 Battery safety
Caution!
There is a risk of explosion if the battery is replaced by an incorrect type.
Replacement of a battery with an incorrect type can defeat safeguards (for example, in
the case of some lithium battery types).
Disposal of a battery in a fire or a hot oven, or mechanically crushing or cutting of a bat-
tery can result in an explosion.
Batteries exposed to extremely high temperatures or environments can result in an
explosion or leakage of flammable liquid or gas.
Batteries subjected to extremely low air pressure may result in an explosion or the leak-
age of flammable liquid or gas.
Attention!
Risque d'explosion en cas de remplacement de la pile par une pile de type incorrect.
Le remplacement d'une PILE par une pile de type incorrect peut neutraliser un
SYSTÈME DE SÉCURITÉ (par exemple dans le cas de certains types de PILES au
lithium).
La mise au rebut d'une PILE dans le feu ou dans un four chaud, ou par écrasement ou
découpe, peut entraîner une EXPLOSION.

Pro Glasses 3 Product Description v 1.4 18
L'exposition d'une PILE à un environnement présentant une température extrêm-
ement élevée peut entraîner une EXPLOSION ou une fuite de liquide ou de gaz inflam-
mable.
L'exposition d'une PILE à une pression d'air extrêmement faible peut entraîner une
EXPLOSION ou une fuite de liquide ou de gaz inflammable.
4.15 Wireless warning
The recording unit contains radio transmitters and receivers (WLAN). Make sure that it
is placed as far as possible from any equipment, objects or body parts sensitive to
such signals.
電波法により5GHz帯は屋内使用に限ります。
4.16 Transportation
Use the provided case when traveling with the eye tracker. For shipping and storage, use the ori-
ginal packing.
For transportation, the recommended range for temperature and humidity for the device is as fol-
lows:
lTemperature: -40°C to 65°C (-40°F to 149°F)
lHumidity: 5% to 95%
ETSI 300 019-2-2 V2.4.1, T2.3 (Public transportation) with exception of high air tem-
perature at +65°C.
4.17 Accessories
Only use accessories provided by or approved by Tobii Pro.
4.18 Cleaning
Avoid touching, scratching, or smudging the lenses on the Pro Glasses 3 head unit or
the Corrective Lenses (optional accessory) and keep all the surfaces clean. Eye track-
ing quality may be degraded if surfaces are dusty or damaged. Take special care to
ensure that there are not smudges or scratches covering either the illuminators or
sensors in the lenses as these can impair performance.

Pro Glasses 3 Product Description v 1.4 19
Do not use window cleaners, household cleaners, aerosol sprays, solvents, alcohol,
ammonia, or abrasives on any component of the Pro Glasses 3 system.
Before cleaning Pro Glasses 3, unplug the head unit cable.
Use the included cleaning cloth and clean the Pro Glasses 3 lenses gently.
Avoid getting moisture in openings and ports on the device.
4.19 California Proposition 65 warnings
WARNING: The batteries in this product can expose you to chemicals including Car-
bon-Black Extracts and Nickel (Metallic), which is known to the State of California to
cause cancer. For more information, visit P65Warnings.ca.gov.
WARNING: The Tobii Pro Recording Unit in this product can expose you to chem-
icals including Carbon-Black Extracts and Nickel (Metallic), which is known to the
State of California to cause cancer. For more information, visit P65Warnings.ca.gov.
WARNING: The USB-C to Gigabit Ethernet Adapter in this product can expose you to
chemicals including Lead and Bisphenol A (BPA), which is known to the State of Cali-
fornia to cause cancer and birth defects or other reproductive harm. For more inform-
ation, visit P65Warnings.ca.gov.
WARNING: The head strap in this product can expose you to Di(2-ethyl-
hexyl)phthalate (DEHP) and Bisphenol A (BPA), which is known to the State of Cali-
fornia to cause cancer and birth defects or other reproductive harm. For more
information, visit P65Warnings.ca.gov.
WARNING: The foam in the carrying bag in this product can expose you to Benzo
[b]fluoranthene, Benzo[j]fluoranthene, Benzo[k]fluoranthene and Indeno[1,2,3-
cd]pyrene, which is known to the State of California to cause cancer. For more inform-
ation, visit P65Warnings.ca.gov.
WARNING: The AC/DC Adapter including the USB cable in this product can expose
you to chemicals including Bisphenol A (BPA), which is known to the State of Cali-
fornia to cause birth defects or other reproductive harm. For more information, visit
P65Warnings.ca.gov.

Pro Glasses 3 Product Description v 1.4 20
5 Compliance
5.1 EU Compliance
5.1.1 Conformity with EU directives
Tobii Pro AB declares that this device is in compliance with the essential requirements of the fol-
lowing EU directives:
l2014/35/EU Low Voltage Directive (LVD)
l2014/30/EU Electromagnetic Compatibility (EMC) Directive
l2014/53/EU Radio Equipment (RED) Directive
l2011/65/EU Restriction of Hazardous Substances (RoHS) Directive
5.1.2 CE marking
All Tobii Pro Glasses 3 are CE-marked, indicating compliance with the essential
health and safety requirements set out in European Directives.
5.1.3 WEEE marking
Pro Glasses 3 is compliant with the Waste Electrical and Electronic Equipment
(WEEE) Directive 2012/19/ EU
5.2 United States and Canada compliance
5.2.1 FCC interference and Industry Canada statement
Pro Glasses 3 recording unit 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 install-
ation. Tobii Pro Glasses 3 can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio com-
munications. However, there is no guarantee that interference will not occur in a par-
ticular installation. If Tobii Pro Glasses 3 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 increasing the separation
between Tobii Pro Glasses 3 and the receiver. Modifications not expressly approved
by Tobii Pro AB could void the user’s authority to operate the equipment under FCC
rules.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.