Panasonic's "Evolta" swim robot, powered by the company's Evolta rechargable batteries, is demonstrated at a pool during a news conference in Tokyo September 15, 2011. The company said three types of Evolta robots, developed to swim, bike and run, will challenge to complete an ironman triathlon course in Hawaii, a total of about 230 km, within one week or 168 hours from October 24, 2011, powered by three AA-size rechargeable Evolta batteries, the company said.[Photo/Agencies]