Elenco SCL-175B Snap Circuits Lights Electronics Discovery Kit Hands-on introduction to electronics Make real working circuits and devices Make over 175 projects with over 55 colorcoded circuit components Plug in your in your iPhone or android phone or any MP3 player and see your ciruits react Snap Circuits have received several AWARDs: National Parenting Center-Seal of Approval, Dr. Toy 100 Best Children's Products, Dr Toy Best Educational Products