The hexapod monster is a six-legged robot that walks forward until it detects an obstacle, in which case it backs up and turns before resuming its forward motion. There is a separate gearbox (unassembled) for each side of the robot, allowing for differential control of the robot's motion. Obstacle detection is performed through an infrared sensor at the front of the robot. Soldering required. Includes detailed instructions. Features: Infrared Sensors * Hexapod Walking Motion * Gearboxes. Requires: One (1) 9V battery and Two (2) AA batteries (not included.) See the Components: Batterries section for great deals on batteries! 1 Each Hexapod Monster RASEHM$29.99 Copyright © 2003-2009 E-Clec-Tech. All rights reserved. All other materials and logos are copyrighted by their respective owners, or companies.