4 stars: So far it's been a very solid experience. The app is a little slow in syncing dials with the watch, but I would be an asshat to say the 40- 80 seconds I've had to wait really inconvenienced me in any way. It would be amazing to see the watch faces available changed out or updated on a regular basis, would add a lot of longevity to the product and overall experience.
4 stars: better than I originally thought actually. For quite a while the app wouldn't track my sleep and couldn't figure out why. apparently the watch wasn't making correct contact with my arm. I adjusted it and now everything works as it should. I would give it 5 stars but the english localization is a bit rough and I sometimes don't know what they were trying to say with the words that were used.
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