BrainBit Flex4 DRY

BrainBit Flex4 DRY – 4-Channel EEG System with Dry Electrodes

The BrainBit Flex4 DRY is a portable, 4-channel EEG system designed for recording electrical brain activity in research, education, training, neurofeedback, and projects related to the development of neurotechnological interfaces.
The system utilizes four independent EEG channels and a flexible textile cap that allows for the placement of electrodes at selected points consistent with the international 10–20 system.
The DRY version is equipped with dry, gold-plated spring electrodes, eliminating the need for conductive gel or paste.
The flexible placement of the four electrodes allows for customization of the measurement configuration to suit a specific experiment, research protocol, or neurofeedback application.
The reference and ground (GND) electrodes are clip-on electrodes that attach to the ears. The measurement module amplifies and digitizes the EEG signal, then transmits the data wirelessly to a computer, smartphone, or tablet using Bluetooth Low Energy (BLE) technology.
The device enables real-time EEG signal recording and interoperability with the manufacturer's software and custom applications using the BrainBit SDK.
The BrainBit Flex4 DRY can be used for EEG activity testing, psychological and cognitive research, neurofeedback, education, prototyping Brain-Computer Interface (BCI) systems, and creating custom applications using EEG signals.
The device is intended for research, training, and wellness applications. The manufacturer clearly states that the Flex4 is not a medical device and is not intended for the diagnosis or treatment of diseases.

Technical Specifications

Device Type: Portable EEG System.
Version: BrainBit Flex4 DRY.
Number of EEG Channels: 4.
Electrode Placement: Four electrodes can be placed at selected points in the 10–20 system.
Channel Designations in the Device System: O1, O2, T3, T4.
Note: The O1, O2, T3, and T4 designations are channel names used by the device and SDK; Flex4 electrodes can also be physically placed at other points in the 10–20 system.
Measurement Electrode Type: Dry EEG Electrodes.
Electrode Material: Gold-plated Electrodes.
Electrode Construction: Spring-loaded.
Reference Electrode: Gold-plated, Ear-Mounted.
GND Electrode: Gold-plated, Ear-Mounted.
Sampling Rate: 250 Hz.
Raw EEG Bandwidth: 0–100 Hz.
Measured voltage range: ±0.4 V.
Communication interface: Bluetooth Low Energy (BLE).
Data transmission: wireless, real-time.
Continuous operation time: up to approximately 12 hours.
Battery charging time: up to 4 hours.
Power supply: replaceable/detachable battery.
Design: compact, portable measurement module.
Electrode attachment: flexible textile cap.
Available cap sizes in the set: 2.
EEG band analysis capability: Delta, Theta, Alpha, Beta, and Gamma – using appropriate software or SDK libraries.
Artifact detection: available in BrainBit signal processing software/libraries.
Data export: depending on the software used, including CSV and EDF/EDF+.
Manufacturer-declared certification: CE and FCC.

Software Required for Operation

The BrainBit Flex4 DRY is not dependent on a single, mandatory manufacturer's software.
To receive, display, record, or analyze data transmitted by the device, compatible BrainBit software or an app using the BrainBit SDK is required.
The device connects wirelessly to a computer, smartphone, or tablet via Bluetooth Low Energy.

EEG Waves App – Basic EEG Visualization

This app is designed for real-time EEG activity monitoring.

It supports BrainBit Flex devices.
It allows you to observe, among other things, the Alpha, Beta, and Theta bands.
It allows you to present the signal and session results, as well as export data.
Available for iOS, Android, and Windows.
Minimum requirements for mobile devices: iOS 12.0 or later and Android 7.0 or later.
This solution is suitable for basic operation, demonstration, and visualization of EEG signals.

NeuroRec – EEG Recording and Analysis

Professional BrainBit software designed for recording, viewing, and analyzing multi-channel EEG.
Flex4 is on the official list of compatible devices.
Enables raw EEG signal recording.
Enables electrode contact quality control.
Enables adding event markers and annotations during the examination.
Supports EEG spectral analysis.
Enables 2D and 3D map presentation.
Enables artifact detection and labeling.
Enables data export to CSV and EDF/EDF+.
Operating System: Windows 10, 32- or 64-bit, build 1903 or newer.
Processor: Intel Core i3/i5/i7 or comparable quad-core AMD processor.
RAM: Minimum 4 GB.
Disk Space: Manufacturer recommends 120 GB or more; SSD recommended. Screen resolution: minimum 1600 × 900.
NeuroRec is the most suitable solution for using the BrainBit Flex4 DRY for research, raw EEG recording, and subsequent data analysis.

NeuroFit PRO – neurofeedback

Software designed primarily for conducting neurofeedback sessions.

It works with BrainBit Flex series EEG devices.
It offers ready-made training protocols, real-time EEG visualization, reporting, and neurofeedback games and exercises.
It supports the analysis of basic EEG rhythms.
It is primarily intended for trainers, psychologists, laboratories, training centers, and users conducting non-clinical neurofeedback sessions.

Operating system: Windows 10, 32- or 64-bit, build 1903 or later. Requires a dual-monitor setup with a resolution of at least 1600 x 900.
NeuroFit PRO is not required for standard EEG recording – it is designed for neurofeedback applications.
NeuroFit PRO is not required for standard EEG recording – it is a solution designed for neurofeedback applications.

BrainBit SDK – Custom Applications and Integrations

The manufacturer provides a free SDK (Software Development Kit).
The SDK allows direct connection to the BrainBit Flex4, receiving raw EEG data, and creating custom research software and applications.
Supported environments include Windows, macOS, Linux, Android, and iOS.
Libraries and solutions are available for Python, C++, C#, Java, Kotlin, Swift, Objective-C, React Native, Unity, and Xamarin/MAUI, among others.
The SDK enables device discovery, BLE connection, electrode contact quality control, EEG signal reception, and further data processing, among other things.
This solution is particularly useful for research projects, BCI, laboratory applications, and when integrating the BrainBit Flex4 with your own IT system.

Other Available BrainBit Solutions

BrainBit Flex8 – 8-Channel EEG System

BrainBit Flex8 is a more advanced version of the Flex system, designed for EEG research, neurofeedback, education, neurological and cognitive research, and the development of custom neurotechnology solutions.
The system is equipped with 8 independent EEG channels, providing a larger number of simultaneously monitored brain regions than the BrainBit Flex4.
Electrodes can be placed at any desired location according to the international 10–20 system.
It supports dry and wet EEG electrodes, allowing you to choose the measurement method for your specific research protocol.
The dry electrode version uses gold-plated, spring-loaded electrodes that do not require the use of conductive gel.
Reference electrodes are gold-plated clips attached to the ears.
Sampling rate: 250 Hz.
Raw EEG signal bandwidth: 0–100 Hz. Measured voltage range: ±0.4 V.
Communication: Bluetooth Low Energy (BLE).
Continuous operation time: up to 12 hours.
Battery charging time: up to 4 hours.
Replaceable battery module.
Two sizes of EEG caps are included.
The system is compatible with NeuroRec and NeuroFit PRO software, among others.
A free BrainBit SDK is available, allowing you to create your own applications and integrate the EEG system with other software.
The SDK supports Windows, macOS, Linux, Android, and iOS, as well as languages ​​and environments such as Python, C++, C#, Java, Kotlin, Swift, React Native, and Unity.
Flex8 represents a middle ground between simpler 4-channel systems and multi-channel systems designed for more comprehensive brain activity mapping.
Flex8 represents a middle ground between simpler 4-channel systems and multi-channel systems designed for more comprehensive mapping of brain activity.

DragonEEG – 21-Channel EEG/qEEG System

DragonEEG is the most advanced EEG system currently offered by BrainBit, designed for advanced EEG, qEEG, brain activity mapping, neurofeedback, and research and neurotechnology projects.
The system provides 21 EEG channels arranged according to the international 10-20 system, enabling simultaneous recording of activity from multiple brain regions.
It is also equipped with three physiological channels for recording EMG, ECG, and EOG signals.
EMG (Electromyography) – enables recording of muscle electrical activity.
ECG (Electrocardiography) – enables recording of cardiac electrical activity.
EOG (Electrooculography) – enables recording of eye movement activity.
The additional physiological channels can be used, among other things, to identify artifacts occurring during EEG recording and conduct synchronized multimodal studies. The system is available with dry, gold-plated spring electrodes or classic wet Ag/AgCl electrodes.
Sampling frequency: 500 Hz.
ADC resolution: 24 bits.
Communication: Bluetooth Low Energy.
Real-time wireless EEG data transmission capability.
Built-in SD card support allows for local data storage independent of wireless transmission.
Battery life: up to 8 hours.
Battery charging time: up to 4 hours.
The kit includes three EEG cap sizes: S, M, and L.
The system allows data export to EDF/EDF+ formats, among others.
DragonEEG works with BrainBit NeuroRec software.
The system is compatible with NeuroGuide software, designed for advanced qEEG analysis and brain activity mapping.
The manufacturer also offers a complete DragonEEG + NeuroGuide kit for recording and advanced qEEG analysis. A free BrainBit SDK is available, enabling integration of the device with your own software and research systems.
The SDK supports Windows, macOS, Linux, Android, and iOS.
DragonEEG is intended primarily for research laboratories, universities, centers conducting qEEG and brain mapping research, neurofeedback specialists, and developers of advanced BCI applications.
The manufacturer classifies DragonEEG as a device intended for research, education, and training; it is not offered as a medical diagnostic or therapeutic device.

Comparison of Available Systems

BrainBit Flex4 DRY – 4 EEG Channels – a solution for flexible, basic, and targeted EEG measurements, research, education, neurofeedback, and the development of EEG-based applications.
BrainBit Flex8 – 8 EEG Channels – a solution for more extensive experiments and studies requiring simultaneous monitoring of multiple brain regions.
DragonEEG – 21 EEG Channels + 3 Physiological Channels – a solution for advanced multi-channel studies, qEEG, brain mapping, and comprehensive brain activity recording.