Light up your party and light up your guests for a holiday party with our Happy Holidays light up necklace. Each Happy Holidays round pendant is 1 1/4" 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 and installed and white LEDs. Our Happy Holidays light up pendant is sold by the piece. Please order in increments of 1 piece.