The intelligent NXT LEGO brick features 32-bit microprocessor, a large matrix display, 4 input and 3 output ports, and Bluetooth and USB communication link Four sensors: Ultrasonic Sensor, 2 Touch Sensors and the all-new Color Sensor Easy-to-use software (PC and Mac) with icon-based drag-and-drop programming and 16 fun building and programming challenges MINDSTORMS is back and better than ever, with new robot models, even more customizable programming, and all-new technology including a color sensor! MINDSTORMS NXT 2.0 combines the unlimited versatility of the LEGO building system with an intelligent microcomputer brick and intuitive drag-and-drop programming software. The new 2.0 toolkit features everything you need to create your first robot in 30 minutes and then tens of thousands of other robotic inventions that do what you want! 619 pieces. Ages 10+