ENGO Eyewear, the pioneer in lightweight augmented reality (“Lite AR”) eyewear for sports, today announced the launch of the new ENGO 2 Photochromic. Building upon the success of the ENGO 2, the lightest heads-up display (HUD) eyewear ever created, ENGO 2 Photochromic introduces adaptive lens technology to empower runners and cyclists to train smarter in any lighting conditions.