Snap Circuits Jr. Select Another great addition to the award-winning Snap Circuits product line fully compatible with all Snap Circuits® sets to build bigger complex and more creative projects. 133 projects clearly outlined in the color project manual. Projects utilize a glow-in-the-dark flying propeller phototransistor LEDs resistors ICs a DC motor and much more. No Soldering - No Tools - It's a Snap! Requires 2 "AA" batteries (not included) Elenco's Snap Circuits® makes learning electronics easy and fun! Just follow the colorful pictures in our manual and build exciting projects such as FM radios digital voice recorders AM radios burglar alarms doorbells and much more!