The Samsung Gear Sport has a 1.2 inch circular AMOLED Display, that is protected by the Gorilla Glass 3 technology. This watch that has been given a 5ATM certification, thus making the watch swim proof.
The watch has been packed up with a bunch of sensors which includes a Heart Rate Monitor, Altimeter, Barometer, and a GPS for runners who want to go without their phones. The watch also has a Spotify 'Offline' Support. The wearable will run Tizen OS out of the box. You can find full specifications here.
The Samsung Gear Fit2 Pro is a fitness tracker and a smartwatch rolled into one. That being said, the Fit2 Pro is one of the best fitness trackers out there. It has a curved AMOLED Display Panel at the front.
Like the Gear Sport, this watch is swim proof. It also comes in a variety of different modes that you can use to work out. This includes walking, running, cycling, elliptical trainer, yoga, and much more. The device has been designed with the environment that which it is going to be used in. You can find the full specifications here.