A Samsung Galaxy Gear smart watch is displayed during the 2013 IFA electronics trade fair in Berlin, Germany, on Sept. 9, 2013. (Xinhua/Zhang fan)
A visitor tries to make a call with Samsung Galaxy Gear smart watch during the 2013 IFA electronics trade fair in Berlin, Germany, on Sept. 9, 2013. (Xinhua/Zhang fan)
A visitor tries to take pictures with Samsung Galaxy Gear smart watch during the 2013 IFA electronics trade fair in Berlin, Germany, on Sept. 9, 2013. (Xinhua/Zhang fan)
Children view a series of bluetooth hearing-aid equipments during the 2013 IFA electronics trade fair in Berlin, Germany, on Sept. 9, 2013. (Xinhua/Zhang fan)