The Twilight watch walks you through day and night by changing the color on its face as darkness gradually approaches, and it gives you a real feel of the daylight fading away into twilight and then the night that brings darkness…

Please note, this is the Math Watch for Geeks, not the Geeky Math Clock.
Unlike the clock, this Geeky Math Watch is with you at all times, worn or your wrist to be punctual with your appointments, and provides the immediate simple challenge any time you wish to have the time…