Fully-portable, powerful for detailed research
The Tobii Pro X3-120 provides exceptional flexibility and accommodates a wide array of human behavior studies. The ultra-slim, light design makes for a compact solution, ideal for studies in authentic research environments. The Pro X3-120 is capable of tracking almost anyone, and the discrete form factor promotes unobtrusive data collection.
The screen-based system shows exactly where people are looking and, with a sampling rate of 120 Hz, it is designed for detailed research into the timing and duration of fixations.
Versatile for a broad spectrum of studies
The Pro X3-120 can be used with a variety of screens – laptops, PC monitors, tablets, or TVs.
The system can be mounted on screens up to 25" in size. We offer accessories in order to make research with mobile devices easier. The Pro X3-120's high-quality tracking of large gaze angles (up to 36°) allows you to also study large projections.
There are additional accessories to accommodate studies of real-world stimuli, such as physical objects or people.
Easy to use
Simple setup, configuration, and automation promote efficient eye tracking studies.
“Eye tracking is invaluable in our research to gain deep insights into information acquisition and preference formation in marketing communication and consumer decision-making processes. The new Tobii Pro X3-120 tracks more people than any other system we’ve seen to date. With this extremely robust and highly-mobile solution, we can study more consumers more efficiently and get more data of high quality. This is a major step forward.”
Captures natural behavior
Participants can be tracked while moving their head positioned at a natural distance from the screen, and the device is hardly noticed. This creates a distraction-free test environment, promoting natural human behavior.
Accurate and robust tracking
The system's very high accuracy and vast tracking capability in real-life conditions ensure high-quality data, while allowing you to work with a wide cross-section of your population.
"The Tobii Pro X3-120 enables new possibilities for eye tracking in educational settings due to it's small size and large tolerance to head movements."
"For us, it’s almost impossible to run tests in a lab. I want to see the user in their natural environment. With screen-based eye tracking, I’m not bound to a specific area or location, but can perform tests wherever I want."
Eye tracker unit
The eye tracker unit measures only 324 mm (12.7'') in length and weighs 118 g (4.2 oz.). It attaches onto screens up to 25" (16:9) with supplied adhesive mounting brackets for monitors, laptops, and tablets.
Mounting solutions for the study of mobile devices, as well as brackets for larger projections or real-world objects (up to a 36° gaze angle), are offered as accessories. With provided adapters, the Pro X3-120 can use the same mounting brackets that come with other screen-based eye trackers from Tobii Pro.
External processing unit
Gaze data calculations are performed by firmware on an external processing unit (using USB 3.0, LAN, and a power connector). This gives you a controlled environment for running your tests with dedicated eye tracking processing, and the ability to use Mac or Linux, as well as computers with lower performance. The external processing unit also enables multiple connections to the Pro X3-120, for example in E-Prime two-computer setups.
Alternatively, calculations can be done by a host processed on your PC (using USB 3.0).
| Gaze sampling frequency | 120 Hz |
| Trackability | 97% |
| Tracking robustness | 92% |
| Accuracy | 0.4° |
| Precision | 0.24° |
| Freedom of head movement |
Width x height: 50 cm x 40 cm (19.7″ x 15.7″) @ 80 cm operating distance: 50 – 90 cm (19.6″ – 35.4″) |
| Latency | Total system latency: < 11 ms |
| Gaze recovery time |
For blinks: immediate |
| Recommended screen size | Up to 25ʺ (16:9) |
| Tracking technique | Binocular, dark and bright pupil tracking combination. One camera system. |
| Data output (for each eye) | Timestamp Eye position Gaze point Pupil diameter Validity code |
* 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.
| Size | 324 x 20 x 17 mm (12.7 x 0.8 x 0.7″) |
| Weight | 118 g (4.2 oz) |
| Eye tracking processing | On local windows PC or External Processing Unit (accessory) |
| Connectors | USB 3.0, LAN with External Processing Unit (accessory) |
| Mounting alternatives | Adhesive mounting brackets for monitors, laptops and tablets. Desk stand accessory package for tripods and desks. |
| Tobii Pro Lab |
| Tobii Pro Studio 3.2.2 or later |
| Tobii Pro Analytics SDK 3.0.98 or later |
| Other applications built on the Tobii Pro Analytics SDK 3.0.98 or later |
| Attention Tool, iMotions |
| E-Prime Extensions, Psychology Software Tools (PST) |
| i2 Visualizer Implicit System, Eyesquare |
| Observer XT , Noldus |
Our eye trackers combine excellent accuracy and precision with an extremely high tolerance for large head movements and a variety of environments. Read more
In this section we will describe how an eye tracker works. Read more
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
Eye tracking provides compelling objective data that reveals user behavior behind usability problems. UX and HCI researchers use eye tracking to evaluate and optimize interfaces and the user experience. Read more
Eye tracking is a unique method to objectively measure consumers' attention and spontaneous responses to marketing messages. These insights help marketers to effectively design communication to catch the shopper's eye. Read more
