Here is an interesting design concept from designer Takemura Ori, the UNI Watch.

The UNI Watch features a customizable digital face that you can change the complete look of to suit your tastes, from the colour to the font, to backgrounds and even the time display.

It certainly looks like an interesting concept, the idea is that it connects to your PC via a mini USB port and then you can choose a customized design with the included software.

It even has a built in accelerometer that displays the watch face when you turn your wrist, this is a great design, and I would love a watch like this as you could change the design of the face all the time.

qixen-p design studio via Yanko Design, Dvice