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Tobii Pro Spectrum with gaze
Tobii Pro Spectrum

Deeper insights into human behavior

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Our most powerful eye tracking system captures gaze data at up to 1200 Hz. It’s a screen-based eye tracker designed for intensive scientific research, from fixation-based studies to micro-saccades.

Best-in-class technology

Tobii Pro Spectrum is our most advanced eye tracking platform, designed for intensive research into human behavior and the mechanics of the fastest eye movements. The system captures data at multiple sampling rates of up to 1200 Hz while still allowing for natural head movement.

Tobii Pro Spectrum

How it works

Using Tobii Pro Spectrum in 3 easy steps

Tobii Pro Spectrum

Set up

Tobii Pro Spectrum can be used with both on-screen and real-world stimuli. It comes fully assembled in the supplied travel case and doesn't require manual configuration of cameras or lenses.

Man looking at Tobii Pro Spectrum

Capture

Collect data from participants at multiple sampling rates of up to 1200hz. Study fixations, saccades, micro-saccades, and tremors, and record pupil diameter and eye openness data.

Tobii Pro Spectrum

Understand

Tobii Pro Spectrum works with our software, Tobii Pro Lab, supporting researchers from experiment design to data analysis. Calculate eye tracking metrics, create visual representations of data or export for further analysis in other software.

Pair it with our software

Tobii Pro Lab + Tobii Pro Spectrum

This robust combination is ideal for in-depth research in psychology, neuroscience, and child development. Designed for intensive scientific research, from fixation-based studies to micro-saccades, this software solution effectively supports researchers at every stage of an eye tracking study — from designing experiments and capturing data to performing detailed analyses.

Explore Tobii Pro Lab
Tobii Pro Lab and Tobii Pro Spectrum

Features

Data points

Data you can trust

  • Works across the population regardless of age, ethnicity, or corrective lenses

  • Keeps high performance through natural head movements

  • Maintains tracking robustness in different lighting environments

  • Provides eye images to help understand what affects the data

Fields of use

For intensive scientific research

Tobii Pro Spectrum is designed for detailed studies of natural human behavior and the mechanics of the fastest eye movements. Discover how you can advance your research in:

A woman looking at Tobii Pro Spectrum

Psychology and neuroscience

Delve deep into human behavior and discover the connections between eye movements and cognitive processes.

Learn more
Tobii Pro Spectrum used for reading research

Reading and language

Measure how humans process and acquire language and understand eye movements during reading.

Learn More
Baby looking at puppets using Spectrum

Developmental psychology

Study attention and gaze patterns, illuminating visual perception, social cognition, and language acquisition in the early stages of child development.

Learn more

About the tech

  • Our patented 3D eye model delivers high-quality gaze, pupil and eye openness data

  • Two eye tracking cameras, taking up to 1200 images per second

  • Fully embedded processing and automatic selection of bright and dark pupil modes for best performance

  • Compatible with all main operating systems

  • Software for the standalone configuration accommodates studies involving real-world stimuli

  • VESA mounting available for fixed table or wall installation

  • The handle allows for smooth adjustment for subjects of different heights

Tobii Pro Spectrum hero shot

Precise synchronization for multimodal research

Tobii Pro Spectrum has accurate and flexible synchronization options with many external devices. The system supports both software synchronization through Tobii Pro Lab or Tobii Pro SDK, as well as hardware synchronization through its unique 8-bit TTL input port for microsecond timing accuracy.

Multimodal research solutions
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Transparent product quality methods

Tobii Pro Spectrum's high data quality has been confirmed through extensive testing. We use well-documented test methods that span from systematic variations of the environmental conditions to a general assessment of the eye tracker performance with a large population of individuals. Our quality control procedures, such as the production process, camera focus, and calibration, guarantee consistent study reproducibility.

Read more about our data quality metrics

Compare eye trackers

Not sure which eye tracker to choose?

Compare our screen-based eye trackers to decide which one is the best choice for your research needs.

COMPARE OUR EYE TRACKERS

Specifications

  • Tobii Pro Spectrum is the best device in the market for our research. We want the equipment to have high resolution but also to be relatively simple to use. Tobii Pro Spectrum is very flexible to multiple settings and can be used for different purposes.

    Marco A. Palma

    Associate Professor Department of Agricultural Economics and Director of the Human Behavior Laboratory, Texas A&M AgriLife, Texas A&M University

    Texas A&M Agrilife logo

Technical specifications

For definitions of the terms used in the tables below, see the Glossary on Tobii Connect.

For more information about output data and the supplementary data stream, please read the Tobii Pro SDK documentation.

The characteristics of the gaze data from an eye tracker are described in terms of accuracy and precision. For more details, take the Accuracy and precision course in Tobii Academy.

Eye tracking technique

Video-based pupil and corneal reflection eye tracking with dark and bright pupil illumination modes.  Two cameras capture stereo images of both eyes for robust accurate measurement of eye gaze and eye position in 3D space, as well as pupil diameter. 

Eye tracking mode

Tobii Pro Spectrum has four different eye tracking modes for different groups of primate species: Human Great ape Monkey Small monkey

Sampling frequency

60 Hz, 120 Hz, 150 Hz, 300 Hz, 600 Hz, or 1200 Hz (max. frequency depends on hardware version) 

Precision¹

Head supported² 0.01° RMS at optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.06° RMS at optimal conditions (raw signal)

Head free-to-move³ 0.02° RMS at optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.08° RMS at optimal conditions (raw signal)

Accuracy¹

Head supported² Down to 0.16° Median: 0.30° (P25: 0.24° - P75: 0.41°)

Head free-to-move³ Down to 0.17° Median: 0.43° (P25: 0.32° - P75: 0.59°)

Binocular eye tracking

Yes

Eye tracker latency

Mean latency < 2 ms @ 1200Hz (SD < 0.2 ms)⁴ 

Blink recovery time

1 frame (immediate) 

Gaze recovery time

Less than 150 ms

Data sample output

Timestamp Gaze origin Gaze point Pupil diameter 

Eye openness data stream

Eye openness stream has the same frequency as frequency selected for the gaze stream and will have the same timestamps. Eye openness data is provided in millimeters, for each eye individually.

Eye image data stream

Eye image stream frequency is approximately 10 Hz (one image with both eyes). Zoomed-in eye images available in tracking mode. Full-frame camera images are available in gaze recovery mode. 

TTL input stream

8–bit timestamped data (256 event codes) 
Event driven detection with a timestamp accuracy of 50 µs 

Tracker and client time synchronization

Integrated between the eye tracker time domain and the client computer time domain with an accuracy of 100 µs

User calibration

Binocular, Monocular

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¹Tobii uses an extensive test method to measure and report performance and quality of data with human participants. Please download the test report for more detailed information. To learn more about Monkey mode and Great ape mode data quality, please contact your Sales representative.²Head supported specs are measured with 20 participants under optimal conditions and chinrest. Values represent the average for the entire screen area. Download Tobii Pro Spectrum Laboratory Metrics Test Report to read the full report.³Head free-to-move specs are measured with a sample of 400+ participants without any head restriction. The setup and test environment are selected to represent normal usage and illustrate the performance of the eye tracker with a variety of participants and for the entire screen area. Download Tobii Pro Spectrum Laboratory Metrics Test Report to read the full report.⁴Visit Tobii Connect for more information on how to optimize your Pro Spectrum setup. Note: Firmware v.2.2.3 and Tobii Pro SDK v.1.9 or later are required to obtain the stated performance.

Head movement tolerance

Excellent
Dual-camera system, with more images than a one camera system, gives a more accurate data calculation and the best level of precision and robustness for head movement. 

Operating distance (mounted on screen)

55 to 75 cm (22" and 30") from the eye tracker 

Freedom of head movement (width x height)

Freedom of head movement at 65cm distance 34 cm x 26 cm (13.5" x 10")

Freedom of head movement at 75cm distance 42 cm x 26 cm (16.5" x 10")

Optimal screen size

Up to 24" (16:9 aspect ratio)

Recommended monitor

Supplied 23.8" monitor 

Tracker setup options

Eye tracker unit can be used alone or together with the monitor or other screens.

Can also be used with real-world stimuli.

Tracker mounted on stand, allows for even larger screens and physical objects to be tracked.

Participant setup

Very simple and easy. Typically, less than 1 minute.

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Software and framework compatibility

Tobii Pro Lab 
Tobii Pro Eye Tracker Manager 
Tobii Pro SDK 
Any applications built on the Tobii Pro SDK 

Operating system

Windows, macOS, Linux

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Hardware versions

300 Hz 
600 Hz 
1200 Hz 

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Dimensions (L x H x W)

55 cm × 18 cm × 6 cm (22" × 7" × 2")
The eye tracker is mounted on a stand, which raises it from the surface by 9 cm (approximately 4")

Weight

5.1 kg (11.4 lbs.)
With the power supply unit, the weight is 5.7 kg (12.9 lbs.)

Connectors

TTL input: 8-bit (DB-9 connector) 
Communication: Ethernet (RJ-45 connector) 
Power supply: 24 VDC (5.5 mm connector) 

Data Processing

Fully embedded data processing 

Eye tracking cameras

N/A

Illuminators

Dark pupil illumination modules
Bright pupil illumination modules 

Power consumption

Typical power consumption: 60 W 
Max. rated power consumption: 96 W 

Power options

Input: 100-240 VAC 50/60 Hz 
Max. rated power consumption: 120 W 
No load power consumption: <0.15 W 
Energy efficiency level: VI 
Complies with EISA 2007/DoE, NRCan, AU/NZ MEPS, EU ErP, and CoC Version 5 

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Monitor model nameEIZO FlexScan EV2451 EIZO FlexScan EV2480
Panel typeIPS, LED backlight IPS, LED backlight
Screen size (diagonal)23.8''23.8''
Weight 3.8 kg (8.4 lbs), incl. mounting 4.7 kg (10.4 lbs), incl. mounting
Aspect ratio16:916:9
Resolution1920 x 1080 pixels 1920 x 1080 pixels
Screen response time5 ms (Gray-to-gray) 5 ms (Gray-to-gray)
ConnectorsDVI VGA HDMI Display port 1 port for monitor control (USB 3.0) 2–port USB hub (USB 3.0) C13 power connector Audio input connector: 3.5 mm Headphone jack: 3.5 mm1 x USB-C Thunderbolt 3 port (DisplayPort Alt Mode) HDMI DisplayPort 4 x USB-A port (USB 3.1 Gen 1) C13 power connector Audio input connector: USB-C, Display port, HDMI (shared with video signals) Headphone jack: 3.5 mm
Built in speakers1.0 W + 1.0 W1.0 W + 1.0 W
Power supply100-240 VAC 50/60 Hz100-240 VAC 50/60 Hz
PowerMax. rated power consumption: 42 W Typical power consumption: 13 W Power Save Mode: 0.5 W Power Management: Power Save (VESA DPM, DisplayPort -Rev 1.1a, and DVI DMPM) Max. rated power consumption: 142 W Typical power consumption: 11 W Power Save Mode: 0.5 W Power Management: Yes
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Downloads

Downloads

Frequently asked questions

For additional information, visit our comprehensive FAQ page.

Check out our FAQS

How can I find out the price of the eye tracker?

If you’d like to see the prices for any of our eye tracking systems, fill out the form at the bottom of the product page. One of our salespeople will be happy to contact you with a breakdown of our pricing structure. 

Visit our Compare Eour eye trackers page or take our Product Quiz to find out.

You can analyze data from our screen-based eye trackers with our software Tobii Pro Lab.  

Tobii Pro Lab is used to design experiments and collect eye tracking data. It offers visualizations of your eye tracking data in the form of heat maps and gaze plots. Tobii Pro Lab also allows you to specify which kind of data you would like to export for further quantitative or qualitative analysis. 

Tobii offers additional services to help you become successful with our products. 

Training 

Tobii Academy (complimentary service): Our e-learning platform with a wide range of courses on eye tracking and related topics and is included with your purchase and accessible through our customer portal Tobii Connect. 

Tobii Getting Started Program (paid service): Personalized online training that introduces eye tracking technology and ensures your first study is optimized. 

Tobii Comprehensive Training (paid service): A one-day on-site program that covers all the essentials of eye tracking technology and best practices. This training includes a hands-on session to apply the knowledge gained. 

Tobii Access an Expert (paid service): A one-hour consultation with one of our experts tailored to your specific questions and needs. 

Learn more about all our courses and services.

Support 

The Tobii Customer Care service is included with your purchase and is available to all users of active Tobii assets. In addition, on Tobii Connect you will find helpful articles, e-learning, and support documents to further assist you.  

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Tobii Pro Spectrum
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