As the first left-hander chronograph in Patek Philippe’s recent history, the new Ref. 5373P-001 stands out with the unusual arrangement of the pushers and displays. Its platinum case is endowed with the caliber CHR-27-525 PS Q, the thinnest split-seconds chronograph movement with perpetual calendar ever built. It is crafted to venerable traditions. The charcoal-colored dial with a black gradation and red varnished chronograph hands reflects a sporty and contemporary style echoed on the strap. It is a highly exclusive timepiece crafted in small series for left-handers and connoisseurs of choice rarities.

Watch
Mechanical manually wound movement. 
Caliber: CHR 27-525 PS Q.
Split-seconds monopusher chronograph. 
60-minute counter. 
Perpetual Calendar. 
Day, month, leap year and day/night indication displayed in apertures. 
Date indicated by hand. 
Moon phases. 
Small seconds.
Dial : Charcoal gray with black-gradient rim, vertical satin finish, gold applied numerals. 18K gold dial plate.
Case : Platinum. 
Diameter: 38.3 mm. 
Height: 12.93 mm. 
Water resistant : 30 m. 
Interchangeable solid and sapphire crystal case backs.
Strap : Black calfskin, embossed with fabric pattern. 
Fold-over clasp.
Diameter: 27.3 mm. 
Thickness: 7.3 mm. 
Number of parts: 476. 
Bridges: 12. 
Jewels: 31. 
Power reserve with the chronograph disengaged: min. 38 hours - max. 48 hours. 
Balance: Gyromax®. 
Vibrations/hour: 21 600 (3 Hz). 
Balance spring: Breguet. 
Hallmark: Patek Philippe Seal.