Tobii Pro Glasses 3 Technical specifications

Tobii Pro Glasses 3
Product Description

Tobii Pro Glasses 3 Product Description
v 1.10
July 2022
All rights reserved.
Copyright © Tobii AB (publ)
The information contained in this document is proprietary to
Tobii AB. Any reproduction in part or whole without prior written
authorization by Tobii 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 Connect for updated versions of this document.

Tobii Pro Glasses 3 Product Description v 1.10 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 Tobii Pro Glasses 3 packages 7
2.2 System components 8
2.3 Head unit 8
2.4 Recording unit 10
2.5 Pro Glasses 3 controller application 11
2.6 Optional accessories and software 11
3 System requirements 13
3.1 Pro Glasses 3 controller application requirements 13
4 Technical Specifications 14
4.1 Eye tracking 14
4.2 Head unit 14
4.3 Recording unit 14
4.4 Corrective Lenses (optional) 15
5 Safety 16
5.1 General precautions 16
5.2 Emergency 16
5.3 Child warning 16
5.4 Infrared warning 17
5.5 Photosensitivity/epilepsy warning 17
5.6 Mechanical shock 17
5.7 Bending 17
5.8 Do not open or disassemble 17
5.9 Connectors 18
5.10 Head unit cable 18
5.11 Environment 18
5.12 Component connection safety 18
5.13 Battery safety 18
5.14 Wireless warning 19
5.15 Transportation 19
5.16 Accessories 20
5.17 Cleaning 20
5.18 California Proposition 65 warnings 20
6 Compliance 22
6.1 EU Compliance 22
6.1.1 Conformity with EU directives 22
6.1.2 CE marking 22
6.1.3 WEEE marking 22
6.2 United States and Canada compliance 22
6.2.1 FCC interference and Industry Canada statement 22

Tobii Pro Glasses 3 Product Description v 1.10 4
6.2.2 ETL compliance 23
6.2.3 UL compliance 23
6.3 Electromagnetic compatibility compliance 23
6.4 Safety compliance 23
6.5 China compliance 24
6.6 Japan compliance 24
6.7 Korea compliance 24
7 Product care 25
7.1 Operational environment 25
7.2 Transportation 25
7.3 Storage 25
7.4 Cleaning 25
7.5 Disposal of the eye tracker 26
Appendix A Customer Care, training, and warranty 27
A1 Customer Care 27
A1.1 Get help 27
A2 Training and education services 27
A3 Warranty information 27
Appendix B Limitations and considerations 28
B1 Intended use 28
B2 Light conditions 28
B3 Eyelashes 28
B4 Droopy eyelids 28

Tobii Pro Glasses 3 Product Description v 1.10 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 used to
capture truly objective and deep insights into human behavior in a real-world environment. The
glasses are designed to capture what the wearer is viewing while providing robust and accurate
eye tracking data. The complete Tobii Pro Glasses 3 system consists of a head unit, a recording
unit, and the Tobii Pro Glasses 3 controller application installed on an external device.
The product should only be used as described in the Tobii 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 Connect for the most recent
specifications for Tobii Pro Glasses 3 and for the latest version of this document.
1.2 Documentation
Further documentation is available for viewing and download on Tobii Connect.
The following documentation is available for Pro Glasses 3:

Tobii Pro Glasses 3 Product Description v 1.10 6
lRelease Notes
lTobii Pro Glasses 3 Product Description
lTobii Pro Glasses 3 User Manual
lTobii Pro Glasses 3 Field Guide
lTobii Pro 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.

Tobii Pro Glasses 3 Product Description v 1.10 7
2 System Overview
2.1 Tobii Pro Glasses 3 packages
Tobii Pro Glasses 3 is sold in four different packages. The table below details the specific fea-
tures 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 ● ● ● ●

Tobii Pro Glasses 3 Product Description v 1.10 8
2.2 System components
The Tobii Pro Glasses 3 system is comprised of the head unit, recording unit, and Tobii Pro
Glasses 3 controller application. Each component is briefly described below. In addition, Tobii Pro
Lab software (purchased separately) can be used for further analysis of eye tracking data.
The Tobii 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. Tobii 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.
The controller application is designed to be installed and used on specific oper-
ating 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 Tobii Pro Glasses 3 controller application installed.
The controller application connects to the eye tracker through an network connection
(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 controller application is designed to be used only with Tobii Pro Glasses 3.
No other type of eye trackers can or should be used together with the controller
application.
2.3 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.

Tobii Pro Glasses 3 Product Description v 1.10 9
The head unit consists of the following parts:
Figure 1. The head unit or "glasses"
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

Tobii Pro Glasses 3 Product Description v 1.10 10
Part Description
6. Accessory attachment Used to attach some of the optional accessories, for ex., the
Protective Lens
7. Nose pad Additional nose pads can be used to change sizing
2.4 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:
Figure 2. The recording unit
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

Tobii Pro Glasses 3 Product Description v 1.10 11
3. 3.5 mm con-
nector for data syn-
chronization
TTL pulse for synchronization with external data sources
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 Tobii Pro Glasses 3 system 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.
2.5 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
2.6 Optional accessories and software
The following optional components can be added to the Pro Glasses 3 system. Learn more on
tobiipro.com.
Component Description

Tobii Pro Glasses 3 Product Description v 1.10 12
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.
Protective
Lenses
This accessory package contains two lenses, clear and tinted, to protect Tobii
Pro Glasses 3 from damage in challenging situations and to support research in
bright environments.
Motion Cap-
ture Marker
Set
Combine Tobii Pro Glasses 3 with motion capture systems and study the links
between attention and movement.
Optional software for Pro Glasses 3
Tobii Pro Lab1Pro Lab is a comprehensive research software plat-
form for eye tracking designed to meet the highest
demands on different research scenarios with exact
timing accuracy. This software offers an efficient work-
flow, making it easy to design experiments, record
data, analyze and visualize eye tracking data, and to
sync this data with other biometric data streams.
Third-party software This term refers to any application built on Pro SDK.
1Tobii Pro Lab may have different system requirements than Tobii Pro Glasses controller application.

Tobii Pro Glasses 3 Product Description v 1.10 13
3 System requirements
3.1 Pro Glasses 3 controller application requirements
Operating
System
Microsoft Windows macOS Android
Version Windows 10 or 11 macOS 11 (Big Sur) Android OS 11 or 12
Processor
(CPU)
6th Generation Intel Core™ i5 (Dual
core) or equivalent
6th Generation Intel
Core i5 (Dual
core) or equivalent
Snapdragon 835 or
equivalent
Memory 8 GB RAM 8 GB RAM 4 GB RAM
Tobii Pro Lab and other software may have different requirements. Read more about
Tobii Pro Lab.

Tobii Pro Glasses 3 Product Description v 1.10 14
4 Technical Specifications
4.1 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
Accuracy 0.6°
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)
4.2 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)
Input voltage and current rating 5.5Vdc max, 0.5A
4.3 Recording unit
Battery recording time 105 min.
Battery type Rechargeable 18650 Li-ion, Capacity: 3 400 mAh
Storage media SD (SDXC, SDHC) card

Tobii Pro Glasses 3 Product Description v 1.10 15
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
Weight 312 grams
Sync Port 3.5 mm jack (TTL signal)
4.4 Corrective Lenses (optional)
Correction lenses 32 pieces., ranging from –5.0 dpt. to +3.0 dpt. in incre-
ments of 0.5 dpt. Made of optical-grade plastic with
hard coating.
Dimensions (height x width x depth) 80 x 270 x 370 mm (complete kit)
Weight 1150 grams (complete kit)

Tobii Pro Glasses 3 Product Description v 1.10 16
5 Safety
5.1 General precautions
The Tobii Pro Glasses 3 system is described in the Tobii 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 damage to the equipment and is done so entirely at the user’s own risk.
The glasses system must be fitted on the test participant according to instructions in
the Tobii Pro Glasses 3 User Manual. Tobii or its agents are not liable for damage or
injuries to a person or their property due to a Tobii Pro Glasses 3 eye tracker system in
any configuration being dropped. Fitting the glasses onto a test participant is done
entirely at the user’s own risk.
The glasses system is to be used for research purposes only. Be aware that due to the
low, but possible risk of failure or distraction, Tobii Pro Glasses 3 should not be relied
upon or used in dangerous or otherwise critical situations.
The Tobii Pro Glasses 3 system is composed of several components as described in
the User Manual and should be used according to manufacturer instructions. Con-
necting, or by other means using any other component than advised in the User
Manual may damage or injure a person, their property or recorded data, and is done
entirely at the user’s own risk.
The head unit is equipped with a head strap to enable tighter mounting of the eye
tracker onto the wearer’s head. Neither Tobii nor its agents are liable for damages or
injuries to a person or their property caused by the head unit head strap.
5.2 Emergency
The Tobii 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.
5.3 Child warning
Tobii Pro Glasses 3 is an advanced system with electronic devices that are composed
of numerous separate, assembled parts. These parts can become separated from the
device, constituting a potential choking hazard or other danger to a child. Young chil-
dren should not have access to or use the device without parental or guardian super-
vision.

Tobii Pro Glasses 3 Product Description v 1.10 17
5.4 Infrared warning
Do not use the Tobii Pro Glasses 3 system when in the vicinity of devices that are sus-
ceptible to Infrared (IR) light. When activated, the 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.
5.5 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 head unit
immediately.
5.6 Mechanical shock
The Tobii Pro Glasses 3 system is a delicate measuring instrument used for research
purposes 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
quality or accuracy can be seriously affected if the 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 Customer
Care for instructions.
5.7 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 head unit or recording unit has been bent.
5.8 Do not open or disassemble
Do not open or disassemble the head unit or the recording unit. Noncompliance will
result in loss of warranty! There are no user-serviceable components inside. Contact
Tobii Customer Care if your Tobii Pro Glasses 3 system is not working properly.

Tobii Pro Glasses 3 Product Description v 1.10 18
5.9 Connectors
The head unit and recording unit have numerous external interfaces (connectors). Con-
necting any other device or connector than those intended may cause personal injur-
ies and/or damage the glasses system. Tobii or its agents are not liable for any
damages or injuries to a person or their property due to connecting unintended con-
nectors.
5.10 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 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.
5.11 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.
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℉
5.12 Component connection safety
The 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 Tobii Pro Glasses 3 controller application installed. The
recording unit should not be connected to any other devices.
5.13 Battery safety
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.

Tobii Pro Glasses 3 Product Description v 1.10 19
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.
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.
5.14 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。
5.15 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%

Tobii Pro Glasses 3 Product Description v 1.10 20
ETSI 300 019-2-2 V2.4.1, T2.3 (Public transportation) with exception of high air tem-
perature at +65°C.
5.16 Accessories
Only use accessories provided by or approved by Tobii.
5.17 Cleaning
Avoid touching, scratching, or smudging the lenses on the head unit and/or the Cor-
rective Lenses (optional accessory) and keep all the surfaces clean. Eye tracking qual-
ity 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.
Do not use window cleaners, household cleaners, aerosol sprays, solvents, alcohol,
ammonia, or abrasives on any component of the Tobii Pro Glasses 3 system.
Before cleaning the glasses, unplug the head unit cable.
Use the included cleaning cloth and clean the glass lenses gently.
Avoid getting moisture in openings and ports on the device.
5.18 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.