The MOSS Zombonitron 1600 is a great way to start building your own robots. MOSS is a new robot construction system where each block is a different part of a robot. With MOSS, you can learn the fundamentals of circuitry, kinematics, robotics, and programming. Combining the MOSS blocks in this kit in different ways yields hundreds of amazing robots. Think of MOSS as building blocks for the 21st century, designed to help kids invent and build their own robotic creations. Kit contains 16 MOSS blocks, 56 Carbon Steel Spheres, and a Micro-USB Charging Cable.