Tank Must watch, extra-large model, Manufacture mechanical movement with automatic winding, caliber 1847 MC. Steel case, beaded crown set with a synthetic cabochon-shaped spinel, silvered flinqué dial, blued-steel sword-shaped hands, interchangeable black grained calfskin strap, interchangeable steel deployant buckle, calendar aperture at 6 o'clock. Case dimensions: 41 mm x 31 mm, thickness: 8.4 mm. Water-resistant up to 3 bar (approx. 30 meters/100 feet).