Cartier Rotonde de Cartier Mysterious Day/Night Watch - 40 mm White Gold Case - WHRO0043

40 mm 18K white gold case, 10.7 mm thick, sapphire crystal back, beaded crown in 18k white gold set with a blue sapphire cabochon, sapphire crystal, sunray-brushed dial with black transferred Roman numerals, manual movement, approximately 48 hours of power reserve, semi-matte blue alligator-leather strap, double adjustable folding buckle. Water resistant to 3 bar (approx 30 meters).