Screen-based eye tracker capturing gaze data at speeds up to 1200 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. The system can capture data in high sampling frequency, while still allowing for natural head movement. This 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.
View the Specifications and Data Quality Test
Report for Pro Spectrum
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, providing a holistic view of behavior.
“The 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. The Pro Spectrum is very flexible to multiple settings and can be used for different purposes.”
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.
“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.”
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.
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 extensive 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.
“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.”
Transparent product quality methods
The 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.
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
The Tobii Pro SDK provides a comprehensive toolkit for researchers and partners who wish to develop analytical applications or scripts to use with the Pro Spectrum and other screen-based eye trackers from Tobii Pro.
This SDK gives access to the full set of advanced gaze data streams that are relevant to your research, and advanced timing support automatically compensates for time differences in real time, providing millisecond synchronization accuracy.
The Pro SDK offers multi-platform support (including the latest versions of Windows, Linux, and Mac) and API bindings for several programming languages (.NET, Python, and Matlab).
“I recommend the Tobii Pro SDK highly for anyone who wants to develop custom applications for eye trackers from Tobii Pro. In less than 10 hours of work, I was able to create a fully-functioning and flexible python script that does essentially everything I would want done with an eye tracker.”
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").
Monitor
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.
| Eye tracking technique |
Video-based pupil- and corneal reflection eye tracking with dark and bright pupil illumination modes. |
| Sampling frequency | 60, 120, 150, 300, 600 or 1200 Hz (max. frequency depends on hardware version) |
| Precision1 | 0.01° RMS at optimal conditions2 0.06° RMS at optimal conditions (raw signal) |
| Accuracy1 | 0.3° at optimal conditions |
| Binocular eye tracking | Yes |
| Total system latency*** | Mean latency < 2 ms @ 1200Hz (SD < 0.2 ms) |
| Blink recovery time |
1 frame (immediate) |
| Gaze recovery time |
|
| Data sample output3 | Timestamp Gaze origin Gaze point Pupil diameter |
| 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. |
1Tobii Pro 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.
2Applying Savitzky-Golay filtering (settings in Tobii Pro Data quality test report)
3For the complete list of available data and the supplementary data stream, download the Pro SDK documentation.
Tobii Pro Spectrum Eye Tracker Data Quality Test Report
Learn more about the quality of our products Tobii Pro Quality
*** Visit Tobii Pro Connect for guidance on how to optimize your setup.
| 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. |
| Freedom of head movement4 (at 65cm distance) | Width x height: 34 cm x 26 cm (13.5" x 10") |
| Freedom of head movement4 (at 75cm distance) | Width x height: 42 cm x 26 cm (16,5" x 10") |
| Operating distance (mounted on screen) | 55 to 75 cm (22" and 30") from the eye tracker |
| Optimal screen size | 24" (16:9 aspect ratio) |
| Tracker setup options5 |  |
| Recommended monitor | Supplied 23.8" monitor |
4Describes the region in space where the participant can move his/her head and still have at least one eye within the eye tracker’s field of view (trackbox) at the specific distance.
5Tracker mounted on stand, allows for even larger screens and physical objects to be tracked.
| 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, Mac, Linux |
| Hardware versions | 300 Hz 600 Hz 1200 Hz |
| Dimensions (L x H x W) in cm/inches | 55 x 18 x 6 (22"x 7" x 2") The eye tracker is mounted on a stand, which raises it from the surface by 9cm (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 | 2 |
| 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 |
| Built in speakers |
1.0 W + 1.0 W |
| Power supply |
100-240 VAC 50/60 Hz |
| Power |
Max. rated power consumption: 42 W |
|
|
Pro Fusion | Pro Spectrum | |
| Precision1 |
0.10° |
0.04° 0.2° |
0.01° 0.06° |
| Accuracy | 0.3° | 0.3° | 0.3° |
| Head movement tolerance | Good (Single Camera) |
Excellent (Dual camera) |
Excellent (Dual camera) |
| 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. |  |
1 Tobii Pro 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.
2Applying Savitzky-Golay filtering (settings in Tobii Pro Data quality test report)
3Using built in filtering.
| Pro Nano | Pro Fusion | Pro Spectrum | |
| Optimal screen size | Up to 24” 1 | 24” | 24” |
| Freedom of head movement width x height @ 65cm distance (either eye) |
35 x 30cm | 40 × 25cm | 34 x 26cm |
| Freedom of head movement width x height @ back of headbox (either eye) |
45 x 45cm2 @80 |
45 x 30cm @80 |
42 x 26cm @75 |
| Operating distance (cm in Z direction) |
45 - 85cm | 50-80cm | 55-75cm |
| Head movement tolerance | Good | Excellent | Excellent |
1For larger screens, the limiting parameter is the quality of the gaze accuracy at the upper corners of the screen when the user sits close to the screen
2Cone/circular shaped
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