Film-patterned retarder (FPR) technology in the Acer display and glasses enable a flicker-free 3D viewing experience. This reduces eye strain, fatigue, and headaches by separating left/right images so only one image reaches the left or right lens at a time. It also eliminates ghosting, since the display and glasses don't need to synchronize. Slightly larger than first generation 3D glasses, they provide a wider viewing area and increased external light blocking.