Snap Circuit SC-300 Snap Circuit allows electronic circuits to be built simply by assembling the parts in order, and even small children can easily enjoy it. Difficult soldering is unnecessary, and complete by connecting the block type electronic parts of the snap button, so even small children can do experiments safely. It is a fun electronic circuit that has a sense of accomplishment when the music is ringing or lit, when completed, you can learn the mechanism of electricity naturally while playing. Elegant children can enjoy it by just assembling the snap-type block parts to which the mechanism of electricity and electronic circuits gets while playing, in order. Difficult soldering is unnecessary and completed by merely connecting block electronic parts. A series of standard products in the snap circuit which added 204 experiments such as crime prevention buzzer and Morse code to the 100 series