Golden Bridge Watches from Corum for Neiman Marcus

Later, by night Akahane tried to create an 'everlasting watch', as he called his future invention. The engineer wanted to replace the escapement considered to be a mechanical movement's weakest link with a time-regulating electronic system. The system was meant to considerably improve the accuracy provided by a mechanical timepiece. in his notebooks Akahane drew a mechanical movement with a mainspring, barrel, gear train and other components, wired to an integrated circuit.In fact, today it seems ironic that in the 1970s an engineer from Seiko took efforts to increase the accuracy of a mechanical movement.In 1982 there appeared the first prototype. The process of re-engineering of a mechanical timepiece turned out to be really complicated. The second prototype appeared only 11 years later. As a result, the mechanical-electronic-technology combination provided the Spring Drive with four important advantages over a conventional watch driven by the mainspring. Considerable power reserve: The automatic Spring Drive offers 72-hour power-reserve, while a standard mechanical watch offers 40 hours. Fast-winding: The winding system of the Spring Drive is 30 percent faster than that a mechanical winding system. High accuracy: A standard mechanical timepiece provides accuracy of about +/- 5 minutes per month. The accuracy of the Spring Drive is about +/- 15 seconds per month. Continuous sweep seconds hand: The seconds hand of the Spring Drive moves in a non-stop sweep around the dial.