INTERACTIVE LED BLINK KIT - Learn to solder in a unique, engaging, fun, and achievable way! The Blink LED Learn to Solder practice kit is our first and most popular solder project kit. It features three LEDs and three push button switches. Once assembled, press the buttons to watch your hard work pay off as the LEDs light up! ALL-IN-1 DIY SOLDERING PROJECT - Whether you’re an adult, student, or teacher, the high-quality parts and intuitive design make it easy to focus on learning or teaching new soldering skills and basic circuit theory. Our kits come equipped with everything you need for success! Each Blink Kit includes a battery, 3 resistors, 3 LEDs, and 3 push button switches.