Intricate moon phase complication, sapphire crystal movement visible through oscillating caseback, cushion-shaped 41 mm stainless steel casing a silver guilloché dial with Roman numeral indices and blued steel hands, technical precision ensuring accuracy despite the complication, spinel-set crown reflecting Cartier heritage, genuine alligator leather strap accented by blue stitching, automatic mechanical self-winding movement with perpetual oscillating function.