Ultra-high EL wire provides excellent visual effect and longer continuous glow time at night. 4 Glowing Mode: Steady On; Flashing/Blinking Glow; Voice Operated (Tune to sound or bass with sensitivity dial); Off. Stay vibrant and lit up for anywhere from two hours at least depending on the battery quality used. Requires 2 AAA batteries (not included). Ergonomic design with stylish black shiny frames. Regular adult size and comfortable to wear. The battery pack can easily be clipped to your belt or placed in your pants pocket. Perfect for Christmas, Concerts, Rave Festivals, Bars, Clubs, LED parties, Costume Parties, Mardi Gras, Carnivals, Gifts, and more!