This Patek is 42.2 mm white gold case, 11.9 mm thick, sapphire-crystal back, blue and black gradiant dial with embossed Aquanaut pattern and gold applied numerals with luminescent coating, caliber CH 28-520 C/528 self-winding movement with flyback chronograph, central chronograph hand, 60-minute counter, date in an aperture, approximately 45-55 hours of power reserve, midnight blue composite material strap, Aquanaut fold-over buckle. Water resistant to 120 m.