Red Light Up Cross Sabers have special lights & sound that crackles & burns like a villain's saber should. Great fun for movie lovers, Cosplay costumes, space theme parties, Halloween, fairs, festivals and beyond, Red LED Cross Saber is the ultimate Light Toy & party prop. 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.