Tobii Pro Spectrum

Our most powerful eye tracking system captures gaze data at up to 1200 Hz. This high-performance device offers superior data quality and is designed for in-depth research on eye behavior and movements, from fixation-based studies to micro-saccades.

Using Tobii Pro Spectrum in 3 easy steps

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.

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.

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

Technical specifications

Eye tracking specifications

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)
Precision	Head supported 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-move 0.02° RMS at optimal conditions (applying Savitzky-Golay filtering, settings listed in the test report) 0.08° RMS at optimal conditions (raw signal)
Accuracy	Head supported Down to 0.16° Median: 0.30° (P25: 0.24° – P75: 0.41°) – Head free-to-move 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)
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

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.
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

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

Hardware versions

300 Hz – 600 Hz – 1200 Hz

Eye tracker unit

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

Monitors

Monitor model name	EIZO FlexScan EV2451	EIZO FlexScan EV2480
Panel type	IPS, LED backlight	IPS, LED backlight
Screen size (diagonal)	23.8″	23.8″
Weight/strong>	3.8 kg (8.4 lbs), incl. mounting	4.7 kg (10.4 lbs), incl. mounting
Aspect ratio	16:9	16:9
Resolution	1920 x 1080 pixels	1920 x 1080 pixels
Screen response time	5 ms (Gray-to-gray)	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	1 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 speakers	1.0 W + 1.0 W	1.0 W + 1.0 W
Power supply	100-240 VAC 50/60 Hz	100-240 VAC 50/60 Hz/p>
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)	Max. rated power consumption: 142 W, Typical power consumption: 11 W, Power Save Mode: 0.5 W, Power Management: Yes