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

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, 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 adjustments to ensure great comfort. Bluetooth streaming and on-board SD storage.

Outstanding usability

Quick and easy set up by non-technical experts or the final user, almost anywhere and under any circumstance.

Optimised EEG sensor 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 and woman wearing Bitbrain's Diadem device

Main Components

Dry-EEG headset

Light (190gr) and flexible headset design that adapts to each head morphology (85% of the 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

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 sensors with wet wipes and store Diadem in its own case.

Technical specifications


EEG channels
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 impedance 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 hs
WeightHeadset: 185g. Amplifier: 122g.
MaintenanceWipes moistened in tap water.
Warranty2 years
CertificationsCE and CB, with EN 60950, EN 55032, EN 55024


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 LabStreamingLayer 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 brain-computer 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
  • Instructions
  • EEG amplifier
  • Suitcase
  • Power supply
  • Bitbrain Software Kit
  • Storage base

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 dat 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.