The Apple Watch Series 1 was the second generation of Apple Watch that was released on September 16, 2016, alongside the iPhone 6s at Apple's annual September event in the Steve Jobs Theater, succeeding the original Apple Watch. It was succeeded by the Apple Watch Series 2, and precceeded by the Apple Watch Sport (Series 0, original Apple Watch, 1st generation Apple Watch).
The Series 1 came in two sizes like all the other models: a 38mm and a 42mm case size with matching band sizes for both. You could also get stainless steel cases.
|Apple Watch (original) · Series 1 · Series 2 · Series 3 · Series 4 · Series 5|
|Apple Watch Edition | Apple Watch Hermes | Apple Watch Nike+ | Apple Watch Sport|
|Apple Watch bands and cases · faces | WatchOS|