Versions of the Apple Watch Series 2 are displayed during an Apple media event in San Francisco, California, U.S. September 7, 2016. REUTERS/Beck Diefenbach

Versions of the Apple Watch Series 2 are displayed during an Apple media event in San Francisco, California, U.S. September 7, 2016. REUTERS/Beck Diefenbach

Versions of the Apple Watch Series 2 are displayed during an Apple media event in San Francisco, California, U.S. September 7, 2016. REUTERS/Beck Diefenbach

September 8, 2016 3:50 AM (UTC+8)