UWatch GT08 User Manual page 4

2.3 Using the Clock screen
While using the Watch, press the Power button to open the Clock
screen.Then click the central of screen to change clock type.
Setup ways：
method 1：turn on，on the Clock screen，click the central of
screen to change clock type.，there are 3 types can be selected.
method 2：turn on，enter the menu ：setup--phone setup--Standby
menu --Unlock type selection.
2.4 Theme Settings
Setting Method：
Go into the smart watch menu: themes-theme Settings-select your
theme