Discover how lights, alarms, motors, switches and more work, all while building fun projects. With E-Blox you can build 3D circuits directly into your brick structures, so they can come to life with light, sound or motion! Compatible with other popular brick products, they offer a great addition to any STEM program. Set contains 46 parts and allows you to build 120 different projects, including a working FM radio. Comes with a battery module that requires 3 AA batteries (sold separately) and an instruction manual. For ages 8 and up.