500-in-1 Electronic Project Lab by Elenco has everything you need to build 500 amazing electronic projects. Learn the basics of electronics and put your knowledge to work creating 500 different electronic experiments, special lighting effects, radio transmitter and receivers, amazing electronic sound effects, cool games and MORE! 500-in-1 Electronic Project Lab includes built-in bredboard for easy wiring and connection of components, and an LCD (Liquid Crystal Display) indicates the information during the experiments in process! Build your knowledge by exploring amplifiers, analog and digital circuits plus how to read schematic diagrams. 500-in-1 Electronic Project Lab comes with transistors, transformers, diodes, resistors, capacitors, phototransistors, CDs, integrated circuits, speaker, earphone, LEDs, LED digit display! Fact-filled, illustrated, lab-style manual included. Uses bredboard and spring hook-up methods. Requires 6 AA batteries.