https://www.iphone-blog.ch/2016/09/08/apple-watch-series-2-wasserdicht-bis-50-meter-gps-doppelt-so-helles-display-dual-core-prozessor-watchos-3/
Apple Watch Series 2: Wasserdicht bis 50 Meter, GPS, doppelt so helles Display, Dual-Core Prozessor & watchOS 3