The new version is also lighter, which will likely reduce strain felt by the exoskeleton's wearer, making it a better choice for troops in mountainous terrain. (Hence all the press photos that look like REI ads.) These refinements in weight, ergonomics, and power supply could also boost the second-generation exoskeleton's coefficiency ratio. Basically: the higher the ratio, the less physical effort is needed to wear it. A ratio of 5:1 means that the wearer's body only needs to exert the effort it takes to carry 10 pounds in order to carry 50 pounds. The company's also claiming that the reduced weight increases battery performance, which would make sense. Norinco's first-generation exoskeleton had a top speed of 2.8 miles per hour, for 12 miles. They say this new version improves on that, but doesn't say by how much.