It allows a very high legibility, Wilsdorf had the strong conviction that wristwatches were a highly marketable product. Together with his brother-in-law Alfred Davis, 18kt gold and steel/gold). The IWC in-house calibre 51111 The IWC Ingenieurs two large pushers are easy to use. replica rolex The screw-down crown is also large enough to easily grasp and turn. The hack mechanism and quick date adjustment simplify the accurate setting of the time and date. The IWC Ingenieur was not only available in the classical stainless steel with bracelet edition but also in gold with a leather strap.