+ Very nice and stylish in the Classic version! Looks like a real clock.
+ On my arm it's not too big, comes from a Garmin Forerunner 225, and the S3 is neat!
+ Very good battery life without "always on" on screen, around 3 days.
+ Very good speaker and microphone, perfect for conversation!
- What's BAD is the UNDERSTANDING GPS receiver at the time; a joke! For a running mile of 5.4 km according to my Garmin 60CSx with external antenna, the S3 shows just over 4 km. Searched for forums and see that more people have problems with the built-in GPS.
Note Read my update at the bottom!
- The barometer and altimeter are a disaster - inconsistent values even with manual calibration. That sensor also sucks cheap shit!
- There is a smaller range of apps, but for my part, I do not miss that much. In any case, you can get notifications from most apps to the clock, but you may not interact with, for example, gmail / inbox.
Overall a good buy, but the GPS and height / barometer are bad! Also, looking for enhanced support for Google Apps, but Tizen puts the limit on ...
UPDATE! After using the phone's GPS together with the S3 once, and then in stand alone mode without phone, the GPS works very well! Displays the correct distance even if the height is incorrect. Phew!