Produces an "exploding star" visual effect using 25 LEDs and IC circuitry. The center LED lights first then the next group of LEDs light and then another set lights until the outer edge of the star lights up. The process then reverses itself. Great attention getter for game rooms, discos, etc. Operates from 9V battery (not included). Size of board: 5.25" x 3.5". Complete with all parts, PC board and instructions. Skill Level 3.