The piSight has 24 OLED microdisplays (by eMagin). 2200×1200 effective for each eye, 24 bit color.
Features:
Panoramic field of view that delivers full 3D immersion: from 82° to 180° diagonal, depending on model
A modular, upgradeable design that fits a very wide range of performance and budget requirements
High resolution: Up to 4200×2400 pixels per eye (2400×1720 effective)
Ease of use: weighing less than 1 kg (2 lbs.), piSight HMDs feature an open-frame design that is comfortable and stays cool.