When we see an analog watch, we get a feeling of time because the time is related to the angle of the pointer. But more and more people are using digital watch or phone to check time. I want to bring the feeling of time to the smartwatch because it is so important!
"White" split the circle into 12 parts which represent the 12 hours. So, you know how much time past today.
White is not only a color, but it also stands for space, container, and paper. In typography, the margin is the white space. In physics, white light becomes every color of light after refract. White is gentle enough to contain any color; white is quiet enough to be a watch face.