Galea Beta Specs

Here is the latest breakdown of specifications for the Galea Beta system. We are continuing to make improvements to the Beta system, and these specifications may change before the final device is shipped.

Last Updated: 11/10/22

Table of Specs

Category	Specification
Compatible HMDs	Varjo Aero Varjo XR-3
Scalp EEG	Dry soft-polymer active electrodes 8-channels Fz, Cz, Pz, Oz, P3, P4, PO7, PO8 Reference and bias drive earclip electrodes for common mode noise rejection.
Facepad	PPG - 1 forehead sensor EMG: 4 channels EEG: 2 channels (Fp1, Fp2) EOG: 2 channels, 1x vertical and 1x horizontal EDA: 1 forehead
Data Acquisition	24-bit resolution: ExG sampling rate = 500hz 18-bit resolution: PPG maximum sampling rate = 400 Hz 16-bit resolution: EDA maximum sampling rate = 25 Hz
Data transfer	Wireless (Dual band wifi 2.4 and 5 GHz, 802.11a/b/g/n/ac) Bluetooth 5.0 Local: micro-SD card slot
Eye Tracking	Image based eye-tracking by Varjo. Electrical based eye-tracking using vertical and horizontal EOGs
IMU and Magnetometer	IMU: 6-axis (acceleration and gyroscope), 1.6 kHz sampling rate. Magnetometer: 3-axis, 20 Hz sampling rate
Power	USB-C Ports 1x input: 5V/1A. Battery charging when not in use. 1x output: 5V/0.5A. Power and data connection with external accessories. Rechargeable 2000 mAH Li-ion battery pack. Run time up to 8 hours.
Head size	Fits head circumferences of 51 - 62 cm
Weight	With VR Lenses: 2.1 lbs Without VR Lenses: TBD
Software Integrations	Unity and Unreal Engine SDKs Bindings for Python, C++, Java, C#, Julia, Matlab, R, and Rust
File Formats & Streaming	File Formats: BDF+, CSV Streaming formats: LSL, UDP, OSC, Serial