Cartier Tank MC Watch. 34.3mm x 44.0 mm by 9.5mm thick stainless steel case, sapphire crystal back, octagonal crown set with a synthetic spinel, sapphire crystal, silvered flinqué dial with blued steel sword-shaped hands, caliber 1904-PS MC automatic winding movement with calendar aperture at 3 o’clock and small second at 6 o