Sinn U-Boat M2B All-Black Diver's Watch with 5000m Water Resistance and Hydro TechnologySinn M2B Description This is an all black diver's watch made from steel inspired by the latest German submarine, featuring Sinn's unique technology of black hard coating. It boasts an astonishing water resistance of 5,000m, achieved through a technology called 'Hydro' that seals a special oil within the case. The water resistance has been tested and certified by the classification and certification body DNV. Official Price 804,100 JPY (tax included)
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Sinn U-Boat M2B All-Black Diver's Watch with 5000m Water Resistance and Hydro Technology