Light up any event with our futuristic lookin LED EL Slotted glasses. These Black Frame Slotted LED Sunglasses features a bright 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 sunglasses features a steady on, slow flash, fast flash and a sound activated light setting. Click 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.