Vacheron Constantin Style No: 5520V/210A-B481 Vacheron Constantin Overseas Chronograph - 42.5mm Steel Case - Opaque Lacquered Black Dial - Stainless Steel Bracelet

42.5 mm steel case, 12.67 mm thick, transparent sapphire crystal back, opaque lacquered black dial with velvet-finished external minutes track, caliber 5200 self-winding movement date by aperture, small seconds, chronograph totalling a maximum of 30 minutes, chronograph totalling a maximum of 12 hours, minutes, hours, approximately 52 hours of power reserve, stainless steel bracelet with polished and satin finish, triple folding buckle. Water resistant to 15 bar (150 m).