Light up any event with our futuristic and sound activated Green El Wire Slotted eyeglasses. Our black frame slotted Electroluminescent Wire eyeglasses features a Green El Wire accent across the slots and an attached battery pack that comes with 2 AAA batteries included and installed. One size fits most. These unique retro 80's light Up glasses feature a steady on, slow flash, fast flash, and a sound-activated light setting. Click the button once for solid on Click button again for slow flash Click button again with wheel rolled down for fast flash Roll wheel up and glasses are now sound-activated Click button again to turn glasses off.