Hexbug Nano Christmas Ornament, Random Color The HEXBUG Nano is a tiny, collectible, micro robotic creature that uses the physics of vibration to propel forward and explore its environment Powered by a tiny motor and 12 angular legs, the industrious critter traverses the ground beneath it and quickly navigates through complex mazes HEXBUG Nano is CPSIA approved for children ages 3 and up and comes with one button cell battery AG13 (LR44)