suitX, the robotics company out of University of California, Berkeley's Human Engineering Lab has launched its first exoskeleton after years of development. It's called Phoenix, a relatively lightweight and affordable device that can help people with mobility disorders walk again. The wearable robot is adjustable according to size and can be put on and removed piece by piece. Its battery can power four hours of continuous walking (at a max speed of 1.1 mph) and up to eight hours of intermittent movement. Best of all, the Phoenix weighs only 27 pounds and costs $40,000.