Rechargeable 3D Active Glasses are the gateway to Samsung 3D entertainment. Impressive both in how they function and in what they allow you to experience, the technology works as follows: When you put them on and look at the screen, the technology first blocks the left and then the right lens. It happens faster than the blink of an eye � so your eye won't notice it. But when images are shown to each eye separately this "staggered" effect achieves far more lifelike 3D images. ONLY COMPATIBLE WITH 2010 3D TVs.