Tobii Pro Spectrum

Deeper insights into human behavior

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.

How it works

How does Tobii Pro Spectrum work?

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.

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 and Tobii Pro Lab banner

Understand

Tobii Pro Spectrum works with
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.

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:

Psychology and neuroscience

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

Learn more

Person reading at a laptop using Tobii Pro Lab software

Reading and language

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

Learn More

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 eye tracker 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

Features

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

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.

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

Specifications

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 0.15° P₅₀: 0.30° (P₂₅: 0.23° - P₇₅: 0.41°) Head free-to-move³ Down to 0.17° P₅₀: 0.43° (P₂₅: 0.32° - P₇₅: 0.6°)
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

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.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")

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.

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

Hardware versions	300 Hz 600 Hz 1200 Hz

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

Monitor model name	EIZO FlexScan EV2451
Panel type	IPS, LED backlight
Screen size (diagonal)	23.8''
Weight	3.8 kg (8.4 lbs), incl. mounting
Aspect ratio	16:9
Resolution	1920 x 1080 pixels
Screen response time	5 ms (Gray-to-gray)

Connectors	DVI 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 mm
Built in speakers	1.0 W + 1.0 W
Power supply	100-240 VAC 50/60 Hz
Power	Max. 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)

	Tobii Pro Spark	Tobii Pro Fusion	Tobii Pro Spectrum
Precision¹	0.26° RMS (ideal conditions) (applying Savitzky-Golay filtering, settings listed in the test report)	0.04° RMS at optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.2° RMS at optimal conditions (raw signal)	0.01° RMS at optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.06° RMS at optimal conditions (raw signal)
Accuracy¹	0.45° (ideal conditions)	0.3°	0.3°
Head movement tolerance	Good (Single Camera)	Excellent (Dual camera)	Excellent (Dual camera)
Optimal screen size	Up to 27” (16:9 aspect ratio)	Up to 24" (16:9 aspect ratio)	Up to 24" (16:9 aspect ratio)
Freedom of head movement width x height @ 65cm distance (either eye)	35 x 35 cm	40 × 25 cm	34 x 26 cm
Freedom of head movement width x height @ back of headbox (either eye)	35 x 35 cm	45 x 30 cm @80	42 x 26 cm @75
Operating distance (cm in Z direction)	45 to 95 cm	50-80 cm	55-75 cm
Tracker setup options	Tracker mounted at tripod, allows for even larger screens and physical objects to be tracked.	Tracker mounted at tripod, allows for even larger screens and physical objects to be tracked.	(a) Screen and eye tracker mounted together (b) Standalone eye tracker (c) Tracker and screen mounted on any standard VESA mount (d) Eye tracker used with external monitor

¹Tobii uses an extensive test method to measure and report performance and quality of data. Please download the Data quality test report for more detailed information.

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Deeper insights into human behavior

Best-in-class technology

How it works

How does Tobii Pro Spectrum work?

Set up

Capture

Understand

Fields of use

For intensive scientific research

Psychology and neuroscience

Reading and language

Developmental psychology

About the tech

Precise synchronization for multimodal research

Features

Data you can trust

Transparent product quality methods

Specifications

Technical specifications

Downloads

Downloads

Are you interested in this product?

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