Kids can use their imagination to combine Snap Circuits® with ordinary building bricks and make endless combinations of construction and circuitry. With patent-pending, Bric-2-Snap technology, kids can wire up their brick builds with Snap Circuits lights, sounds, moving parts and 3-D circuits to illuminate and enhance their designs! Instead of just building a structure, now kids can learn how to build the circuit that makes the lights on a skyscraper turn on or that makes the gears on a drawbridge move! Details: Includes assorted pieces 15.5" x 12" package size 200+ pieces Features sounds, moving parts and 3D circuits Requires 3 AA batteries (sold separately) Compatible with ordinary building bricks For ages 8 and up Contents: 140+ fully compatible building bricks 75 Bric-2-snap adaptors 20 Snap Circuits component parts 1 full-color, easy-to-read project manual