PIXIE is an Arduino-based NeoPixel watch
You won’t find any numbers on this watch; instead, PIXIE uses LEDs to reveal the time–hours in blue, minutes in red, and seconds in green. Beyond that, a capacitive touch switch on its strap will activate a flashlight mode.
In terms of electronics, PIXIE is equipped with an Arduino Pro Mini, an Adafruit NeoPixel Ring, a real-time clock module, a lithium-ion battery, and a few other components–all housed inside a simple cardboard box with a piece of transparent plexiglass.
Sound like you’d like around your wrist? Check out its Instructables page here.