IWC Porsche Design Compass Watch History

Under the technical leadership of Jürgen King, the IWC-tuned ETA 2892 became the IWC caliber 375.23, a 22 jewel, 4Hz movement with shock absorber and straight-line lever escapement. The watch also had monometallic balance, self-compensating flat balance spring, index regulator, ball-bearing rotor, and hacking seconds function, with a rotor made of 21 karat paramagnetic gold.

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