Panasonic's 3D Active Shutter Eyewear Essential Pack Combo (TY-EW3D2MMK2) is the gateway to a dazzling entertainment experience. It is impressive both in how the 3D glasses function and in what they allow you to experience. 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. The 3D glasses can be easily adjusted to fit various face shapes and sizes, from children to adults, and their extremely durable hinges withstand repeated opening and closing.