This soldering practice kit features a multivibrator flashing light setup, making it an electronic DIY project. The LED bistable training set is designed to help users enhance their soldering skills while creating a functional electronic device. It offers a hands-on learning experience in electronics. Features -Color: Green -Material: PC -Size: 3.50X2.50X0.20cm/1.38X0.98X0.08in -Fine learning: experience the joy of soldering practice through electronic diy projects, enhancing your skills and technical knowledge -Versatile oscillation modes: built-in multiple oscillation modes produce various interesting sounds and light effects, making your creations more dynamic and engaging -Flashing light module: equipped with a flashing light module to create eye-catching light effects, adding visual appeal to your projects -LED bistable circuit: learn the principles of LED bistable circuits, mastering practical application techniques to elevate your electronics crafting skills -Wide application: compatible with school teaching, scientific experiments, and personal hobbies, catering to diverse needs and interests Package list: 2 x sets of soldering kits