The LEGO Mindstorms NXT 2.0 is a programmable robot set with a smart microcomputer brick and intuitive software, enabling it to act like a real robot. The LEGO Mindstorms set boasts three interactive servo motors and four sensors, allowing you to guide your robot's movements with precision. The power of the LEGO building system, an intelligent command center and easy-to-use, drag and drop programming software unleash the power of your robot-building imagination. 577 pieces