4 years & up. Ignite your curiosity and explore the world of robotics and coding with unique robot building blocks. Easily snap Cubelets together to create an endless variety of robot constructions with no messy wires necessary. Each Cubelet contains its own unique software inside that is designed to give it a specific function so how you assemble them matters. If you want to build a robot that exudes a specific behavior you must choose the correct Cubelets to combine. You will learn coding while you build! This set features the new Bluetooth® Hat that allows you to connect your robots to the free Cubelets app to add new abilities, control your robot, make your robot communicate, and more! Includes 10 Cubelets, Bluetooth® Hat, Brick adapters for creative brick add-ons and customization, Micro-USB cable, and a Guide.