WatchOS 3

WatchOS 3 is the third major release of watchOS for the Apple Watch series developed and distributed by Apple Inc.

Product history
watchOS 3 was derived from iOS 10; both were announced on June 13, 2016 at the 2016 Worldwide Developers Conference.

Supported models

 * Apple Watch (original)
 * Apple Watch Series 1
 * Apple Watch Series 2