8547 Mindstorms NXT 2.0 is a Mindstorms set released in 2009. Included are 619 pieces to construct and program various robotic models from either the instructions, or from your own ideas.
This is a description taken from LEGO.com. Do not modify it.
The “NXT” generation of buildable, programmable robots is here!
LEGO® MINDSTORMS® NXT 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!
Key elements and features:
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
Three interactive servo motors
Four sensors: Ultrasonic Sensor, 2 Touch Sensors and the all-new Colour Sensor
Colour Sensor has triple functionality: distinguishes colours and light settings, and functions as a lamp
Easy-to-use software (PC and Mac) with icon-based drag-and-drop programming and 16 fun building and programming challenges
All the LEGO® elements (612 pcs) you need for creating incredible robots
Building instructions for 4 new amazing robots
Personalize your robots with the Sound and Icon editors
Share your project files with your friends with the Pack-N-Go project packager