Wearable dry-EEG headset optimised to monitor emotional and cognitive states in real-world applications with outstanding ease, comfort and reliability.
man driving a car with a dry eeg headset

Wearable and mobile dry-EEG headset

Diadem is a portable EEG headset designed for real-world applications that require great comfort and unobtrusiveness for the user and an agile setup and outstanding signal quality for the researcher. Developed with 12 dry EEG electrodes over specific brain areas, it is optimised to estimate emotional and cognitive states (pre-frontal, frontal, parietal and occipital brain areas). Its high-performance active shielding and stable mechanical design provide outstanding robustness and EEG signal quality, even with movement or during long recording periods. 

Owing to its refined usability, this dry electrode EEG headset can be easily self-placed in less than 2 minutes by the final user, or assisted by either technical or non-technical experts. This feature, in combination with its great comfort and reliability, is opening the door to neuroscience research in real-world applications and real-life brain-computer interface products operated everywhere by final users, families or assistants.  

Diadem comes with the Bitbrain Software Kit for EEG signal acquisition, processing, and programming, which has a large compatibility with real-time I/O and third-party data processing (LSL, Matlab, Python, BCI2000, OpenVibe, etc). Also, by acquiring the Human Behaviour Research Lab, it can be performed a seamless synchronisation with other human monitoring technologies such as ExG, GSR, eye-trackers, indoor positioning system, among many others. 

I want to use Diadem for

Real-world research
Carry out human behaviour research in real-world scenarios and configurations with ecology and reliability.

Real-life applications
Develop new brain-tech products or services with the most accessible EEG hardware.

Brain-computer interfaces
Advance the frontier of interaction with reliable brain-tech usable by everybody, anywhere at anytime.

Main features

Wearable and portable
Ultralight design with flexible arcs and six points of adjustments to ensure great comfort. Bluetooth streaming and on-board SD storage.
Outstanding usability
Quick and easy set up even by non-technical experts or the final user, almost anywhere and under any circumstance.
Optimised eeg electrode placement
Measure accurately frontal alpha asymmetry, occipital alpha -ERD/ERS, P300, N400, CVN, etc.
Robust dry-EEG monitoring
High-quality EEG that records with a resolution of 24 bits at 256Hz for 8+ hours thanks to active shielding with stable sensor contacts.
Practical technology
Easy to transport and store without maintenance or expenses on consumables.
High software compatibility
Intuitive software suite for users or SDK for programmers, and great compatibility with Matlab, Python, etc.
Man driving a car while using a tablet

Main Components

Components Diadem
Dry-EEG headset

Light (190gr) and flexible headset design that adapts to each head morphology (85 perc global population). It has 12 dry-EEG sensors with mechanical designs that reduce contact impedances and guarantee stable contacts, as well as active shielding to maximise SNR.


EEG amplifier

Portable, small and light (125gr) amplifier that records the EEG channels at a resolution of 24 bits at 256 Hz. It has an internal IMU (9 DOF) and online relative impedance control. With microSD recording and Bluetooth connectivity, a 10+ metre range, and up to 8+ hours continuous recording.


How to use

Setup - Self-placement
Learn how to set up the Diadem from a participant self-placement perspective.
How to use it

Clean, quick and easy set up by non-technical personnel in just a few minutes. This dry-EEG system does not require expenses on consumables (jars of gels, syringes, shampoo, etc.), and there are no additional maintenance costs. It comes with an intuitive, powerful software platform for signal acquisition with visual cues to assure quality montage and EEG monitoring.

  1. Preparation: Connect the EEG to the amplifier, open the side and top strips and place the EEG on the head, aligning the central mark with the nose. Then slide it back to the most prominent zone of the head. Place the clip on the left ear lobe.
  2. Set up: Wait 10 seconds and move the sensors that are not green yet to ensure they are in contact with the scalp. Repeat until there is good signal quality in all the sensors. 
  3. Test: Blink, bite, close your eyes, move your arms and walk around to check that the EEG is not affected.
  4. Recording: Now you are ready to record your EEG data and to export it afterward.
  5. Clean and storage: Clean the EEG sensors with wipes moistened in water and store Diadem in its case.

Technical specifications


Sensors and headset
EEG channels12 x EEG (Fp1, Fp2, AF7, AF8, F3, F4, P3, P4, PO7, PO8, O1, O2), REF (A1) y DRL (Fpz)
Type of sensors/electronicsEEG dry sensors with active shielding and optimized DRL
Head perimeter53 cm - 61 cm
Wireless amplifier
Sampling rate/resolution256 SPS at 24 bits
BandwidthDC – 40Hz (3º order LPF)
Online/real-time pedance checkYes (relative contact impedance)
Integrated sensorsIntegrated IMU (9 axis): accelerometer, gyroscope magnetometer
Other inputs1 x Digital input (1 bit), 1 x optical trigger
Input range and noise± 100 mV, < 1 μVRMS (0.5 – 30Hz) @256Hz
CMRR / Input impedance> 100 dB @50Hz, > 50 GΩ
Data streaming and store
Data transmission and rangeBluetooth 2.1 + EDR with 10 meters in direct sight.
Data backupYes (removable µSD card. Max 8GB, class ≥10 )
BatteryRechargeable lipo battery. Charging time <3h
Autonomy> 8 h
WeightHeadset: 185g. Amplifier: 122g
MaintenanceWipes moistened in tap water.
Warranty2 years
CertificationsCE and CB, with EN 60950, EN 55032, EN 55024

Software specifications

Bitbrain Software Kit (included with equipment)
Bitbrain real-time SDKIn C/C++ for Windows and Linux.
Bitbrain data acquisition and visualization suiteLive visualization, streaming or SD recording, data export in CVS and raw data visualization.
Third parties real-time I/OAll compatible with LabSreamingLayer LSL (BCI2000, OpenVibe, NeuroPype, etc).
Third parties data processingMatlab (EEGLAB, FieldTrip, BCILAB,etc), Python (MNE, etc) and more.
Bitbrain software platforms (optional)
Bitbrain Human Behaviour Research LabPractical research platform for experiment design and data acquisition with 30+ sensor modalities seamlessly synchronized, and to compute a wide range of emotional and cognitive biometrics.
Bitbrain Cognitive Training LabSoftware platform for QEEG and cognitive training for health and wellness.
Bitbrain programming frameworkMultimodal real-time neuroscience or braincomputer interface development.

What is included

Bundle includes

The devices are easily stored and transported within a suitcase. Technology is easily cleaned with common wipes. 

  • EEG headset
  • EEG amplifier
  • Power supply
  • Storage base 
  • Instructions
  • Suitcase
  • Bitbrain Software Kit

Basic Support is included during the life time of the product. 

  • Email support
  • Technical assistance 
  • Knowledge base

Optional Premium support is also available.

Bitbrain Software Kit
eeg software for eeg data acquisition and programming

Diadem comes with a software for EEG signal acquisition, processing and programming, which has a large compatibility with real-time I/O and third-party data processing.

Simplified data acquisition and setup
Collect data with the help of visual cues to assure montage and quality monitoring.
Flexible programming
Easy to use development with versatile SDK to address a wide variety of applications.
Powerful real-time applications
Using real-time LSL third-party platforms such as Matlab, BCI2000 or OpenVibe among others.
In depth data analysis
Compatible with advanced platforms such as Matlab, EEGLab or MNE among others.


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