g.Nautilus PRO FLEXIBLE is a CE-certified and FDA cleared wearable EEG headset to record brain activity in medical and clinical environments. It’s available with 8/16/32 dry or wet EEG electrodes that can be plugged into the headset.

This makes the device especially suited for medical applications because multiple caps can be used with one headset and the cleaning is easier. g.Nautilus PRO FLEXIBLE allows to plug-in electrode strands with g.SAHARA hybrid EEG electrodes or g.SCARABEO wet EEG electrodes. Simply pick an electrode strand best suited for your appliation.

g.Nautilus PRO FLEXIBLE is the amplifier which can be connected to different electrode strands holding 8/16/32 EEG electrodes, such as g.SAHARA Hybrid or g.SCARABEO electrode systems. Additional Safety Connectors allow you to plug in different types of body sensors.

  • Strand g.SCARABEO
  • Strand g.SAHARA Hybrid
  • Strand g.SCARABEO + 4  Safety Connectors
  • Strand g.SAHARA Hybrid + 4  Safety Connectors
  • Strand Safety Connectors Only


Electrode strands can be plugged into the headset
Strand with g.SAHARA hybrid EEG electrodes for dry and gel recordings
Strand with g.SCARABEO EEG electrodes for wet recordings
Strand with safety sockets to connect g.SCARABEO, g.SAHARA hybrid or g.Sensors
Easy cleaning of the electrode strands; fits ideally for medical applications
8/16/32 channels wearable EEG with 3-axis accelerometer
24-bit accuracy at 500 Hz sampling rate
2.4 GHz digital transmission, range: 10 meters indoor
10 hours continuous recording and 2-3 hours charging
Internal impedance check with for g.SCARABEO electrodes
A new benchmark in usability
Full software environment
CE certified and FDA cleared medical EEG headset


Weight< 110 g without electrode grid
Size78 (L) x 94 (W) x 26 (H) mm
Sensitivity±2.25 V, ±1.125 V, ±750 mV, ±562,5 mV, ±375 mV, ±187.5 mV (software selectable)
InterfaceWireless 2.4 GHz ISM band
Digital inputs8 digital trigger inputs at Base Station
SupplyBuilt-in lithium ion battery, runtime > 10 h with 32 channels, inductive charging according to the QI standard of the Wireless Power Consortium
Amplifier type Real DC coupled
32 × ADC 24 Bit (1.024 MHz internal sampling per channel)
Noise level< 0.6 µV RMS between 1 and 30 Hz (at highest input sensitivity)
Input channels32 mono-polar / 16 bi-polar channels with GND and REF (software selectable)
Input impedanceDC > 100 MOhm
Applied partBF
Safety classII
Certification and StandardsCE certified and FDA cleared medical device IEC60601-1 3rd, IEC60601-1-2, IEC62304, IEC60601-2-26, ISO 14971 10993-1, 62366, 2010-2012 IEEE Recommended Practice for Neurofeedback Systems


Dolby Laboratories is widely known for producing great sound in cinemas. Within their research, Dolyb Labs use g.Nautilus PRO wearable EEG device to study emotional responses of their audiences while they are watching videos.

The scientists at Dolby Labs try to better understand what makes the audience engaged, what makes their skin blush, increase their heart-rate or give them goose bumps.


g.Nautilus PRO FLEXIBLE can be used for stroke rehabilitation, where patients perform different movements (e.g. hand movement, leg movement, …). Therefore, it is very important to record artifact-free EEG signals from the headset.

The cap size and montage of the EEG electrode strand in a g.GAMMAcap can be customized to a patients’ needs in order to quickly plug in the EEG cap and immediatly start recording. After the recording, the electrode strand can be disconnected from the amplifier for an easy cleaning and storage.


Brain activity can be recorded with g.Nautilus PRO while tDCS stimulation is applied. Also, TMS stimulations can be done during EEG recordings. A post-processing artifact removal algorithm integrated in g.BSanalyze software robustly eliminates the discharge artifact of TMS and tDCS within a few milliseconds.


g.Nautilus PRO Flexible is a perfect match for brain assessments with DOC or ADHD patients who are unresponsive, do sudden movements or have limited brain recording time. For these type of measurements, a g.Nautilus PRO FLEXIBLE is easier to mount than any other wearable device. It reduces the risk of pulling on the EEG electrodes and degrading both EEG quality and the clinical assessment.

g.tec’s studies have shown that wearable EEG headsets reduce data loss due to artifacts. This is important where clean brain signals are very difficult to acquire. g.Nautilus PRO FLEXBILE can be mounted pretty fast because g.GAMMAcaps with pre-mounted electrodes can quickly be connected to the g.Nautilus Flexible amplifier. This helps users to prepare the optimal cap placement for different head-shapes and sizes whithout changing it after the recording.

“We have several ongoing studies. One of these studies is to extend human arm control to new approaches that control more than two arms with the help of brain-computer interfaces.”

Hiroshi Ishiguro, PhD - Intelligent Robotics Laboratory, Japan

“g.Nautilus wireless EEG amplifiers allow us to investigate freezing of gait in Parkinson’s disease, a dangerous symptom for the aging population as it can lead to falls. We can synchronize the EEG signals with VICON motion capture data seamlessly, without adding extra burden on our patients such as backpacks, or wired in hardware following them.”

Aysegul Gunduz, PhD - University of Florida, USA

“We have used the g.USBamps for approximately four years now and the quality of the signals surpasses our greatest expectations. Last year we also invested in the g.Nautilus system and have been able to move from the more stringent laboratory conditions to the real world settings where BCIs find their applications. I would highly recommend both for anyone involved in BCI research.”

Natalie Mrachacz-Kersting, PhD - Aalborg University, Denmark


Wearable EEG headsets are becoming increasingly important in medical and clinical environments because more and more studies are conducted in the field. For these reasons, g.tec developed different versions of g.Nautilus wearable EEG headsets. Their designs are tiny, lightweight, wireless and set a new standard of usability.

In combination with g.SAHARA hybrid or g.SCARABEO and g.LADYbird wet EEG electrode technology, researchers get top quality recordings.


Send us your email so we can contact you as soon as possible.