Technical Specifications

Headset Version	Pre-2019	2019
Number of Channels	5 (plus CMS/DRL reference on left mastoid)	5 (plus CMS/DRL reference on left mastoid)
Channel names (International 10-20 locations)	AF3, AF4, T7, T8, Pz	AF3, AF4, T7, T8, Pz
Sampling Method	Sequential sampling, single ADC	Sequential sampling, single ADC
Sampling Rate	128 SPS (2048 Hz internal)	128 SPS (2048 Hz internal)
EEG Resolution	14 bits 1 LSB = 0.51μV (16 bit ADC, 2 bits instrumental noise floor discarded)	14 bits 1 LSB = 0.51μV (16 bit ADC, 2 bits instrumental noise floor discarded)
Bandwidth	0.5 - 43Hz, digital notch filters at 50Hz and 60Hz	0.5 - 43Hz, digital notch filters at 50Hz and 60Hz
Filtering	Built in digital 5th order Sinc filter	Built in digital 5th order Sinc filter
Dynamic Range (Input referred)	8400 uV (pp)	8400 uV (pp)
Coupling Mode	AC coupled	AC coupled
Connectivity	Proprietary 2.4GHz wireless (with dongle), BLE	Proprietary 2.4GHz wireless (with dongle), BLE
Battery Capacity	LiPo battery 480mAh	LiPo battery 450mAh
Battery Life (typical)	Up to 8 hours	Up to 8 hours
Impedance Measurement	Real-time contact quality using patented system	Real-time contact quality using patented system
IMU Part	LSM9DS0	ICM-20948
Accelerometer	3-axis +/-8g	3-axis +/-4g
Gyroscope	3-axis +/- 500 dps	Output as Quaternion
Magnetometer	3-axis +/- 12 gauss	3-axis +/- 4900 uTesla
Motion Sampling	128 Hz	64 Hz
Quaternion Outputs	No	Yes
Motion Resolution	14-bit	14-bit (dongle) / 8-bit (BLE)
Sensor Material	Semi dry polymer	Semi dry polymer