Introduce your child to the exciting world of electronics with Snap Circuits Jr. SC-100. This innovative kit includes over 30 color-coded components that snap together to create working electronic circuits and devices. Recommended for children 8 and older, this set offers 101 do-it-yourself projects, including a sound-activated switch, musical doorbell, voice-controlled lamp, flying saucer, and light police siren. The easy-to-follow instructions and large color illustrations make learning fun and engaging. The kit can be upgraded to the SC-300, Snap Circuits Pro, or Snap Circuits Extreme with additional parts and manuals. Package dimensions: 12.1 x 9.6 x 1.7 inches.