3 stars: Not compatible with Samsung Galaxy S21. Update: after many trials finally it works. Surprise: it can measure glucose, your blood sugar level. However it is not easy to start each measure. There is no alarm clock function in your watch menu, but you can configure it in this software.
3 stars: The app worked great the first time I connected. Kept good time. Then there was an update and can't get the app to connect, my Bluetooth says it's connected. BP works on the watch but doesn't register in the app as well all items. I also ordered one of the business face but it will not let me put back on the watch.
2 stars: App is not user friendly. The only thing I can get to work are the watch faces, to which there are very few to choose from. Can not figure out how to sync the watch so that it shows readings in the app or music controls and weather on the watch. Not very impressed.
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