Light up your graduation party and light up your guests with our Congrats Grad light up necklace. Each Congrats Grad 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 L.E.D's. Our Graduation light up pendant is sold by the piece. Please order in increments of 1 piece.