Change the watch face
Connect your watch with Amazfit Watch app. Tap Profile in the lower right hand corner, tap My watch, Tap Amazfit Stratos, select Watch Faces. Tap on your selection and the watch face will update.
Press/hold down on your watch face until the background image reduces in size. Swipe Left or right to select watch face.
Swipe down from the home screen of the watch >> More Settings >> Common >> Watch Face.