For software: All notifications work perfectly and come simultaneously with those on the phone. Whatsapp, SMS and so no problem. Replies works with the speech function really very good and very accurately.
Unfortunately, you can not start the navigation of the clock from, is a little bug, but should eventually be resolved. Previously it was. (Currently have 5.0.2 on it)
It also jerky from time to time when a little overwhelmed the clock. Therefore, the deduction a star.
The battery life is good, but varies from 1-3 days; it is highly dependent on how often you playing around it and what to use for a Watch Face.
The GWR was fortunate to be the current best SW on the market, so it is even more powered in future with the latest updates. If the navigation errors and the starting and jerk to light fixed, I can imagine here to give me 5 stars, so unfortunately not.
Nevertheless, it is the best SW. I wear them constantly, even when I've never worn watches. My cell phone is also since on loud / vibration-free. My clock governs yes.