Elenco Electronic Playground 60-in-One Experiments, No Soldering Required (Ages 10+)Build over 60 electronic projects including a finger touch lamp, a metal detector, a transistor radio, and an alarm with the 60 In One Electronic Playground. Learn about voltage, currents, resistors, capacitors, and much more. Uses spring hook up method. Features: Build these exciting circuits: Finger touch lamp Magnetic bridge Voltmeter Morse code Alarm Electronic noisemaker Electronic kazoo Electronic keyboard AM Transistor radio Radio announcer