Every worldtimer is wrong for half the year, because a third of its 24 cities move their clocks and the dial does not. Ming splits them: cities that never shift stay on a fixed inner bezel, cities that do sit on an outer one that clicks exactly 15 degrees — one hour — and locks there, with a red “DST ON” aperture between eight and nine o’clock so you can see which state you left it in. Two adjustments a year, 40mm steel, 200 pieces.