Nevertheless Steger Had employed Rolex watches for past expeditions (he was just the fourth person in record to achieve both Poles), to the 1989 expedition, he utilised A unusual watch manufactured especially for him from the French brand, Yema. The watch, called the Bipole Duopoly had a 48mm titanium situation, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/