By Harro Ten Wolde and Miyoung Kim BERLIN/SEOUL (Reuters) - Samsung Electronics Co Ltd unveiled a smartwatch on Wednesday that works as an accessory to its market-leading Galaxy smartphones, with a small screen offering basic functions like photos, hands-free calls and instant messaging. The world's top handset maker hopes the Galaxy Gear will boost the appeal of its range of Android-powered smartphones, as it battles to maintain its supremacy in the rapidly saturating high-end mobile market against arch rival Apple Inc. ...



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