While Steger Had utilized Rolex watches for past expeditions (he was just the fourth individual in heritage to reach equally Poles), with the 1989 expedition, he employed A unusual watch manufactured specifically for him through the French manufacturer, Yema. The watch, called the Bipole Duopoly had a 48mm titanium situation, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/