Kid Inventor Creative Electronics Kits present hundreds of projects with a variety of control methods such as manual light magnetic sound water and motor. Using this kit kids can build a controllable fan a sound-activated music doorbell a fingertip flashbulb a radio a light sensitive alarm and more. The magic snap-connection of the components makes the assembly easy and secure. It provides experience for youngsters with basic electronics and enhances their interest and creativity. Learn as they play...Kids love it! Note: K320 has all K120 parts and projects plus 200 more interesting and advanced projects include Radio Radio Station and Remote Alarm. K120 only offers basic projects such as lights fan and Music Doorbell. You can not make a Radio with a K120 kit! Dimensions: 18.8 x 13.2 x 2.25 .- SKU: KDINV002