LED Flashing Glasses Slotted Rave-Eyes&trade; for Raves or Parties - Crystal THE HOTTEST ONES - Rave-Eyes High Quality LED Slotted Glass with replaceable batteries - these are the newRave-Eyes ones exclusively from 3Dstereo Glasses You can trust these Rave-Eyes - New Light up style sunglasses. These shades will make you stand out during the night time and day. Shades have multiple settings slow fash, fast flash, and still light. This style glasses have bright blue lights. CE certified. There are four settings that can be set with the power/selection button located in the back of the right temple arm; easy to reach with glasses on or off. Replacement of batteries is easy as the three batteries required are inexpensive, common batteries, and can be purchased in most stores selling batteries and from 3Dstereo on Amazon. And make sure that they are the Rave-Eyes batteries. Extra Rave-Eyes are available in different colors on Amazon by 3Dstereo Glasses.