The Reference 5374 Grand Complication with minute repeater and perpetual calendar combines technical excellence and elegance in a new white gold version with a Grand Feu blue enamel dial featuring a glossy finish. The case shape is distinguished by its subtle interplay of curves and its concave bezel. The minute repeater with its “cathedral" gongs wrapping almost twice around the movement is distinguished by its rich, deep sound.
Watch
Self-winding mechanical movement. 
Caliber : R 27 Q.  
Minute repeater with “cathedral” gongs. 
Perpetual calendar. 
Day, date, month, leap year and 24-hour indication by hands. 
Moon phases.
Dial : Blue enamel, gold applied Breguet numerals. 18K gold dial plate.
Case : White gold. 
Diameter: 42 mm. 
Height: 12.2 mm. 
Case is humidity and dust protected only (not water resistant). 
Interchangeable
Power reserve: min. 38 hours, max. 48 hours. 
Minirotor in 22K gold,  solid and sapphire crystal case backs.
Strap : Alligator leather with scare scales, hand-stitched, shiny dusk blue. 
Fold-over clasp.
Minute repeater. 
Perpetual calendar : day, date, month, leap year by hands. 
Diameter: 28 mm. 
Thickness: 6.9 mm.
Number of parts: 467. 
Bridges: 12. 
Jewels: 39. unidirectional winding. 
Balance: Gyromax®. 
Vibrations/hour: 21 600 (3 Hz). 
Balance spring: Spiromax®. 
Hallmark: Patek Philippe Seal.