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: 2/27/24

Table of Specs

Compatible HMDs	Varjo Aero, Varjo XR3
Scalp EEG	Dry, soft-polymer, active electrodes 10-channels F1, F2, C3, CZ, C4, P3, PZ, P4, O1, O2 (10-10 Electrode Placement Map)
Ear Clips	PPG using one ear clip Reference and Bias drive ear clip electrodes for EEG common mode noise rejection
Face Pad	Dry, passive electrodes: EMG: 4 channels EXG: 2 channels (Fp1, Fp2) EOG: 2 channels - 1x vertical and 1x horizontal EDA: 1 forehead or external
External Inputs	6 channels of ExG 1 channel of EDA
Data acquisition	EXG: 24-bit resolution with max sampling rate of 500 Hz PPG: 18-bit resolution with max sampling rate of 400 Hz EDA: 16-bit resolution with max sampling rate of 25 Hz
Data transfer	Wireless: Dual band wifi 2.4 and 5 GHz, 802.11a/b/g/n/ac Bluetooth 5.0 Wired: USB-C port, USB full-speed transmission Local: micro-SD card slot
Eye-tracking	Image based eye-tracking by Varjo
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 2000mAH Li-ion battery pack Run time up to TBD hours
Galea headset	Head circumference: 55 - 61 cm Weight (without VR system): TBD
Software Integrations	Unity and Unreal Engine SDKs Seamless integration with Varjo eye-tracking metrics Bindings for Python, C++, Java, C#, Julia, Matlab, R, and Rust Demonstration examples
Recording and Streaming	GUI tools for recording, visualizing, and playing back data Remote streaming utilities Railed and low-impedance sensor validation checking utilities File Formats: BDF+, CSV Streaming Formats: Serial, LSL, UDP, OSC