Samsung tried to squeeze a lot into the new Gear S3 Frontier, from an LTE radio to automatic fitness tracking to a form of Samsung Pay that works almost anywhere. In general, these whiz-bang features work well, while an excellent user interface makes the watch easy to use.
Pros
Still has the best smartwatch interface
Excellent performance
Respectable battery life
OLED display is bright and crisp
Cons
Not many good Tizen apps
Automatic exercise tracking can be weird
Will be too big for some