The Partime wristwatch has an unusual watch face: the right angle in the blue circle on the watch face horizontally tells the hours and vertically indicates the minutes. At noon and midnight, the blue totally disappears and then, just like an hour glass, the cycle restarts with a complete blue circle. Aside from the graphic display, Partime also offers a digital time and date display at the push of a button. The wristwatch is waterproof and shock resistant and its battery lasts for 20 months.