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Urwerk - EMC Black

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The EMC (Electro Mechanical Control) from Urwerk is a mechanical, high precision watch which enables its owner to monitor the movement's timing rate and adjust its chronometric performance  in a real-life environment which is of course different from person top person based on many affecting factors like position, temperature, shocks or activities.

Last year Urwerk presented the first version of the EMC with a case made of titanium and steel. There is now a new version, the Urwerk EMC Black, whose case is made of a very attractive shot-blasted black DLC-treated titanium and steel case.

The deconstructed dial of the EMC offers four separate indications which stand out very clearly against the black case. From top left and clockwise: on demand, precision indicator ranging from -20 to + 20 seconds per day, seconds dial,  hours and minutes,  80-hour power reserve indicator.

Turning EMC over reveals the fully in-house movement with the integrated circuit board, the top of one of the two mainspring barrels near the crown and the top of the balance wheel and optical sensor on the winding handle side.

While the movement of the EMC is 100% mechanical, the watch also houses an electronic brain. In fact, an optical sensor on the balance wheel captures the precise rate of oscillation of the 4 hertz (28,800 vph) regulator, over a period of 3 seconds and compares it to the reference rate provided by  a 16,000,000 hertz electronic oscillator. An integrated circuit determines the difference between the timing rate of the movement and that of the reference oscillator. The timing adjustment screw, accessible on the back of the watch, allows the owner to make very fine adjustments to the balance rate regulator by changing the active length of the balance spring.

For more technical specifications and to understand how it practically works, please refer to last year's detailed article. Only 55 pieces of the Urwerk EMC Black will be produced. Its price is 118,000 Swiss Francs.

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