 Hans Wilsdorf was an early believer in the potential of the wrist watch, and made it his mission in life to popularize them.Hans Wilsdorf had become aware in 1902, during his stay at La Chaux-de-Fonds of Hermann Aegler who was based in Bienne, Switzerland, who had begun producing 'ebauches', which are rough movements for high-quality, small lever escapement watch movements.In 1905, Hans traveled to Bienne, Switzerland and placed an order with Hermann Aegler, which resulted in the largest order ever made for wristlet watches.