Aqua E.L. Wire Mardi Gras Mask is the bright blue wonderful mask the krewe have been waiting for this Mardi Gras season. And don't limit it to only Fat Tuesday, the E.L. Wire Masquerade Mask is the perfect promo for Jazz Fest, Masquerade parties, Halloween events, weddings, bar & restaurants. To active your Glow Mardi Gras Mask, remove pull tab from inside the battery pack and press the button. Choose from 3 light functions: Flash, blink and steady light. Battery pack has a clip on back to help stay put in your pocket. E.L. emits a low decibel high-pitched sound that is noticeable when wearing this product. Aqua E.L. Wire Mardi Gras Mask comes ready to use with 2 replaceable AA Batteries.