8 years & up. Press and release the switch and watch the saucer rise into the air! Snap Circuits® use brightly-colored electronic components that snap onto a clear plastic base to build different circuits. Kit includes an instruction sheet for the main project and up to 10 additional projects! Build exciting projects such as FM radios, digital voice, recorders, burglar alarms and more. No tools are required, as plastic modules snap together with ease. Requires 3-AA batteries (not included).