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- Instrument - Sinn Instrument 657 S D (SN-136)


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Sinn Instrument 657 S D

657.020 Leather Strap


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This pilot's watch is a relatively new addition to the Sinn instrumental watches collection. It comes with ETA 2824-2 automatic movement that performs 28 800 vibrations per hour and has 25 bearing jewels. The extreme protection from magnetic influences makes this watch extra special. A number of features have been added for the convenience of the wearer – captive pilot's bezel with minute ratcheting, a date window located between the 4 and 5 o'clock marks, luminous hands and markers, pressure resistance and scratch-resistant sapphire crystal glass with anti-reflective coating.


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