Not your regular yo-yo! This Black Super Light Up LED Yo-Yo is equipped with light for a fun, illuminating experience. Radiate your "rock the baby", light up your "lariat" and put some flair in your "forward pass" as this bad boy explodes with colorful lights. With a flick of the wrist it lights up from the motion sensor inside. Nothing makes the concept of rotational inertia more exciting than a light up yo-yo! Features "sleep" mode and ultra bright LED lights. Measures approximately 2.125" x 2.125" x 1.125" with a 40" string. Includes 1 LR41 battery. Comes packaged in a blister pack.