The second operating system has finally arrived at our Apple smartwatches. And we think that it is great, even if it works only with iOS 9. In the version two, called WatchOS 2, Apple has implemented most of the improvements made in the version one. Still there are a few surprises such as email reply, more friends, better customization options and a few more. But the biggest progress is made in the performance of a smartwatch – Apple Watch is now faster, more feature rich and much cooler than it was before.