Push the switch on this kit and bright red dice “roll” rapidly. Release the button and one of six standard dice patterns stays on. That's your number! If you are playing a game that requires two dice, simply remember the first number and roll one more time for the second number. Uses 21 bright red jumbo LEDs and two ICs to provide an electronic way to replace standard dice. Kit features black outline printed dice on top of circuitboard. Operates from one 9V battery (not included). Size of board: 6.7” x 3”. Complete with all parts, PC board and instructions. Skill Level 1.