How can I change the clock style on Gear S2?

1. On home screen, (1.) tap and hold on the current clock screen – then (2.) swipe from right to left to see the possible clock screens available. Tap on a one of the pictures of a clock screen to select it.

In the apps area tap on (1.) Settings, then (2.) tap Display, then (3.) tap Watch faces (4.) swipe from right to left to see the possible clock screens available. The watch face you selected will be applied on the Clock screen.

In the Samsung Gear app (1.) tap Watch faces and (2) select a desired clock type.

(3) Tap STYLISE to select background and items to display on the watch face.

The watch face you selected will be applied on the Clock screen.