Cartier Rotonde de Cartier Second Time Zone Day Night Watch 42mm 18K white gold case, 11.96mm thick, sapphire back, fluted crown with a cabochon sapphire, 18K white gold bezel, sapphire crystal, silver dial with blue guilloché with large date at 12 o'clock, caliber 1904-FU MC automatic movement with apple-shaped hands in blued steel, retrograde second time zone at 10 o'clock, day/night indicator at half past three, small seconds at 6 o'clock, navy blue alligator skin strap, folding buckle. Water resistant to 3 bar.