Tobii Pro Spectrum

Screen-based eye tracker capturing gaze data at speeds up to 600 Hz. This high-performance research system provides superior data quality and is designed for extensive research into behavior and eye movements – from fixation-based studies to micro-saccades.


High performance for extensive behavior research

The Tobii Pro Spectrum is our latest and most advanced eye tracking platform, designed for extensive studies into human behavior and the mechanics of the fastest eye movements. While capturing data at speeds up to 600 Hz, it still allows for natural head movement, which opens up new possibilities in fields like psychology, developmental studies, neuroscience, reading research, and ophthalmology.

The Pro Spectrum is designed to ensure the highest data quality and reproducibility through evolving, patented eye tracking algorithms from Tobii, sophisticated hardware design, and premium hardware components.

A yound man wearing EEG cap looks at a screen of Tobii Pro Spectrum eye tracker

Flexible set-up and sync options

The Pro Spectrum provides exceptional flexibility, accommodating a wide array of research scenarios and study designs.

This system can be used with the provided screen or with the eye tracker alone, enabling both on-screen and real-world stimuli, such as physical objects or people. Multiple sampling rate options accommodate everything from fixation-based research to studies with more intense requirements on data granularity and time-based measurements.

The TTL port and precise timing enable seamless synchronization capabilities with external biometric data sources.

  • 8-bit TTL port for sync in with other data sources
  • Easily removable 24" screen

Unmatched freedom of movement

The Pro Spectrum tolerates more head movements than any other high-frequency screen-based eye tracker on the market. The system provides saccadic event resolution and extremely precise data.

This unique combination of capabilities allows researchers to deeply explore human behavior and cognitive processing, as well as the mechanics of the fastest eye movements (e.g. saccades, tremors, and micro-saccades), without interfering with the natural behavior of the subject. With its ability to track freely-moving subjects, the Pro Spectrum easily facilitates research with children and other participants who would otherwise need a chinrest to control their movement.

  • Very high tolerance for both large and fast head movements in all directions
  • Tracking resumes quickly if the subject moves in and out of the track box



An infant in front of Tobii Pro Spectrum eye tracker looks at a researcher with poppets

The Tobii Pro systems offer an unobtrusive means to collect data which ensures a more comfortable experience for our participants. The data is extremely rich and often provides insights into cognitive processes that cannot be attained from standard behavioral responses such as reaction time and choice.

Dr Tom Beesley, Senior Lecturer, School of Psychology, UNSW Australia

Data you can trust

The Pro Spectrum is extremely accurate and precise with unparalleled tracking robustness, which makes it possible to study a very large portion of the population in many real-life conditions.

  • The 3-D eye model delivers superior gaze data, including wide gaze angles and all corners of the screen
  • Offers binocular bright and dark pupil tracking with two eye cameras, both taking up to 600 images per second
  • Demonstrates extremely robust tracking capabilities, regardless of ethnicity, age, or corrective lenses
  • Detects eyes instantly with minimal data loss during blinks or when subjects look away
  • Maintains high accuracy, precision, and tracking robustness during subjects' head movements and in different lighting environments
  • Allows precise synchronization of gaze information with data from other sources, such as EEG, GSR, or ECG
  • Captures pupil data at the same sampling rate as the gaze data
  • Provides eye images to allow researchers to understand what is affecting the data


Simple ingenious design

The Pro Spectrum's simple setup, configuration, and automation allow you to add advanced eye tracking to your research with little effort. Researchers at all levels of expertise can use the system without needing training.

The eye tracker comes fully assembled in the supplied travel case and doesn't require manual configuration with the setup of cameras, lenses, etc. Researchers can rely on quick, stable calibration of subjects and productively track the subjects they have attained for their study.

  • Software for the stand-alone configuration accommodates studies that involve real-world stimuli
  • VESA mounting available for fixed table or wall installation
  • Handle allows for smooth adjustment when accommodating subjects of different heights


“It is essential that eye trackers can tolerate head movement while providing high level eye tracking capacity to enable tasks that better reflect real-world scenarios. Fast processing eye tracking with freedom of head movement opens up new opportunities for innovative mental health research.”

Professor Adam Guastella, Principle Research Fellow and Clinical Psychologist at the Brain and Mind Centre, Faculty of Medicine, The University of Sydney

Transparent product quality methods

The Pro Spectrum's high data quality standards have been confirmed through comprehensive testing and validation procedures, using well-documented test methods. Consistent reproducibility in studies is guaranteed with quality control procedures throughout the entire production process, including camera focus and the calibration of each unit. Multiple product certifications ensure that quality and user safety requirements are met.

Tobii Pro SDK

In the first quarter of 2017, there will be a new Tobii Pro SDK available for researchers who wish to develop niche applications or scripts to use with the Pro Spectrum and other screen-based eye trackers from Tobii Pro.

The Pro SDK will offer a broad set of tools to make it simple to develop a variety of applications across multiple platforms, using a wide range of programming languages. This SDK will give researchers access to the full set of eye movement data streams relevant to their research, such as 3-D eye coordinates, raw data, pupil data, etc.


Eye tracker unit

The eye tracker unit can be used together with the provided monitor, or it can be used alone with other screens or real-world stimuli.

This unit, without the monitor, measures 55 cm x 18 cm x 6 cm (22" x 7" x 2"). The eye tracker is mounted on a stand, which raises it from the surface with 9 cm (approx. 4").

Tobii Pro Spectrum X-Mode


The removable high-resolution 24" monitor accommodates the display of on-screen stimuli and has been carefully selected from a high-quality display manufacturer to meet the highest demands on stimuli presentation.

A low and stable response time of less than five milliseconds makes it suitable for studies where control of the timing of the stimuli presentation is essential. The IPS panel has a 178-degree viewing angle, which ensures a consistent experience of the stimulus presented, independent of where the subject is positioned.

We recommend using this monitor, but optionally other monitors can be used too.

Tobii Pro Spectrum straight on


Preliminary eye tracking specifications*

Gaze sampling frequency 60, 120, 150, 300 or 600 Hz (The maximum frequency depends on chosen hardware package.)
Gaze sampling variability <0.3%
Accuracy Approx. 0,4° at 65 cm
Precision Approx. 0,1° at 65 cm
Freedom of head movement

Width x height: 29 cm x 23 cm (11″ x 9″) at 65 cm. Operating distance: 55 - 75 cm (22″ – 30″)

Latency Total system latency: < 5 ms
(Latency from center of exposure to data available on client interface is less than 3 frames.)
Gaze recovery time

For blinks: immediate
After lost tracking ≤ 100 ms

Recommended monitor Supplied 23.8" monitor
Max gaze angles 30°
Tracking technique Binocular bright and dark pupil tracking
Data output (for each eye) Timestamp
Gaze origin
Gaze point
Pupil diameter

*) Tobii Pro uses an extensive test method to measure and report performance and quality of data. This Tobii Pro Spectrum specification is a condensed version of the preliminary results from these measurements. Final test results will be available in the first quarter of 2017.

Eye tracker unit

Size 55 x 18 x 6 cm (22 x 7 x 2'')
The eye tracker is mounted on a stand, which raises it from the surface with 9 cm (approx. 4'').
Weight 5 kg (11 lbs)
With the power supply unit the weight is 5.6 kg (12.4 lbs). 
Eye tracking processing Integrated in the eye tracker unit
Connectors TTL input: 8-bit (DB-9 connector)
Communication: Ethernet (RJ-45 connector)
Power supply: 24 VDC (5.5 mm connector)
Ethernet Power Supply Input: 100-240 VAC 50/60 Hz
Output (to eye tracker): 24 VDC, 120 W
User camera mount Standard 1/4'' thread


Size 23.8''
Weight 3.8 kg (8.4 lbs), incl. mounting
Aspect ration 16:9
Screen resolution 1920 x 1080 pixels
Screen response time 5 ms

- Display port
- 2 port USB 3.0 hub
- C18 power connector
- Input terminal: 3.5 mm
- Head phone jack: 3.5 mm

Power supply

100-240 VAC 50/60 Hz

Built in speakers

1.0 W + 1.0 W

Software compatibility

Tobii Pro Lab
Tobii Pro SDK (available in the first quarter of 2017) 
Any applications built on the Tobii Pro SDK


Our eye trackers combine excellent accuracy and precision with an extremely high tolerance for large head movements and a variety of environments. Read more


We have developed a test method to make it possible to compare different eye tracking systems. Repeat the tests by using the test specifications and judge the quality of the products yourself. Read more

How do Tobii Eye Trackers work?

In this section we will describe how an eye tracker works. Read more

Related Products

Tobii Pro Lab
Software for the entire research process - from test design and the recording of eye tracking data, to the interpretation and presentation of results. Enables the combination of eye tracking with other physiological data streams ... Read more

Related Services

Online Initial Training
A two-hour virtual interactive session that will help you to install and learn how to operate your eye tracking system. Provides a basic understanding of the hardware, the software, and how to use the system. Read more
Onsite Installation and Initial Training
A one-day onsite installation of your eye tracking system. Provides a basic understanding of the hardware, the software, and how to operate the complete system. Read more

Fields of Use

Psychology and Neuroscience

Eye tracking is used in different fields of psychology and neuroscience to understand how and why eye movements are made and how we gather information with our eyes. Read more

Infant and Child Research

Infant and child researchers use eye tracking to study perceptual, cognitive, and social-emotional development from birth through early adulthood. Read more

Clinical Research

Researchers are seeking to find meaningful analysis of eye movement information to accurately identify and treat ocular disease and disorders such as autism, ADHD, Parkinson’s disease and more.  Read more