<P> Apple Watch is a line of smartwatches designed, developed, and marketed by Apple Inc . It incorporates fitness tracking and health - oriented capabilities with integration with iOS and other Apple products and services . The first generation watch was available in four variants: Apple Watch Sport, Apple Watch, Apple Watch Hermès, and Apple Watch Edition; each was distinguished by different combinations of cases and first - or third - party interchangeable bands . </P> <P> Apple Watch (excluding Series 3 LTE) relies on a wirelessly connected iPhone to perform many of its default functions such as calling and texting . The first generation watches are compatible with iPhone 5 or later models running iOS 8.2 or later, through the use of Wi - Fi or Bluetooth . </P> <P> The Apple Watch was released on April 24, 2015 and quickly became the best - selling wearable device with 4.2 million sold in the second quarter of the 2015 fiscal year . </P> <P> The Apple Watch Series 2 was released in September 2016, along with the Apple Watch Series 1 . </P>

When did the apple series 3 come out