A man shows the function of Sony's SmartBand SWR10 via a smartphone's App at the Mobile World Congress (MWC) in Barcelona, Spain, on Feb 24, 2014. The MWC kicked off Monday in the city of Barcelona with the presence of 75,000 delegates from 200 countries and regions as well as 1,800 companies from the mobile telecommunications sector. [Photo / Xinhua]
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