With the new software iteration, users will get additional watch faces including timelapse and the ability of using your own photos. In addition, it is now able to display on its side while charging and there’s a new time travel feature which lets you check your past and upcoming appointments from the watch face. Probably the biggest change is the support for independent watch apps that would work standalone.
To get watchOS 2, you must first update your current iPhone to the latest iOS 9. Once that’s done, launch the Apple Watch app, and head over to My Watch > General > Software Update. To install, the watch needs to have at least 50% of battery life and it must be connected to the magnetic charger in order to proceed. Once the update is done, your Apple Watch will reboot itself.
If you can’t get the update to work, iMore has suggested a few troubleshooting steps. First you can try switching on Airplane mode and off again for both the Apple Watch and your iPhone. If that still doesn’t work, you can try restarting both devices or re-pair the watch from scratch.
You can check out all the new features of watchOS 2 over here.