Light up your party and light up your guests for a disco theme party with our Disco theme light up necklace. Each Disco round pendant is 1.25" in diameter and comes on a 24" cord. All pendants have a multi functional switch, slow blink, fast blink or constant on and come with batteries included & installed and white LEDs. Our Disco theme light up pendant is sold by the piece. Please order in increments of 1 piece.