Pro Version - Contains over 75 parts including voice recording IC, FM radio module, analog meter, transformer, relay, and 7-segment LED display. Build over 500 experiments. Have fun learning all about electronics. Dr. Toy Winner of 100 Best Children's Products. This Elenco electronics kit is recommended for children ages 8 and up. Elenco's new Snap Circuits makes learning electronics easy and fun! Just follow the colorful pictures in our manual and build exciting projects. You can even play electronic games with your friends. All parts are mounted on plastic modules and snap together with ease. Enjoy hours of educational fun while learning about electronics. No tools required. Uses "AA" batteries. | 
