Patek Philippe Split-Seconds Chronograph Grand Complications Watch - 5370P-001

41 mm platinum case, interchangeable full and sapphire-crystal back, authentic black enamel dial with gold applied Brequet numerals, caliber CHR 29-535 PS manually wound movement with Split-Seconds Chronograph (instantaneous 30-minute counter, seconds subdial, tachymeter scale), approximately 65 hours of power reserve, shiny black alligator strap with square scales, fold-over buckle. Water resistant to 30 m.