Patek Philippe Split-Seconds Chronograph Grand Complications Watch - 5370P-00141 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.