Red Light Up Cross Sabers have special lights & sound that crackles & burns like a villain's saber should. Great fun for movie tie-ins, pop culture conventions and after-parties, space theme parties, Halloween events, fairs, festivals and beyond, Red LED Cross Saber is the ultimate promo. To activate your Cross Saber, remove pull tab and press button on handle. Lights & sound together resemble static electricity, LEDs flickering just a bit and the sound effect blasts on/off with a consistent mellow crackle in between. Red Light Up Cross Sabers with Sound come ready to use with 2 replaceable AAA Batteries.