Bric: structures combines the best of Snap Circuits with ordinary building bricks to create 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 invent almost anything. There's no limit to what kids can create with Snap Circuits Bric: structures! The award-winning Snap Circuits products teach kids to have fun learning electricity, engineering, circuitry and more. Snap Circuits features building components with snaps to assemble electronic circuits that function like the printed circuit board found in most electronic products. Details: 10" x 5" base size Builds over 20 projects Requires 3 AA batteries (sold separately) For ages 8 and up Contents: 140+ fully compatible building bricks 75 bric-2-snap adapters 20 Snap Circuits component parts 1 project manual