Features 1、Radio Function: The circuit building block kit comes with FM radio function that has level indication and adjustable volume. 2、Pretty Effects: Combining pretty colors and beautiful lighting effects, the electronics building block implies endless fun. 3、Happy Building: Moreover, up to 120 kinds of different integrated circuits can be assembled, just enjoy the happy building. 4、Smart Learning: Hand on hand building can better facilitate both the learning and the development of imagination of children. 5、Perfect Present: You can give this circuit building kit to your kids as an excellent present for birthday, Christmas, etc. Specification Item Type: Circuit Building Kit Model: HS YS2982 Product Material: Plastic Power Supply Mode: 3 x AA dry battery, not included. Use: 120 kinds of different integrated circuits can be assembled. Package List 44 x Circuit Building Block 1 x Magnet 1 x Building Diagram