Patek Philippe has attired the World Time Minute Repeater Reference 5531 in white gold. The dial center is adorned with a new cloisonné Grand Feu enamel motif depicting one of the famous steamships of the Belle Époque fleet still sailing on Lake Geneva today. The result is an entirely hand-made miniature Rare Handcrafts masterpiece.
Launched in 2017, this model has established itself as the first minute-repeater that always chimes local time. The caseband and the minute-repeater slide piece feature a hand-guilloched hobnail pattern emblematic of Patek Philippe. The skeletonized lugs ensure an unobstructed view of this guilloché work.

Watch
Self-winding mechanical movement. 
Caliber: R 27 HU. 
Minute repeater with two classic gongs. 
Local time strike. World Time. 
24-hour and day/night indication for all 24 time zones.
Dial : Grand Feu cloisonné enamel center with steamboat cruising on Lake Geneva. 
18K gold dial plate and 24-hour ring.
Case : White gold. 
Case and slide piece with hand-guilloched hobnail-patterned decoration. 
Skeletonized lugs. 
Diameter: 40.2 mm. 
Height: 11.49 mm. 
Humidity and dust protected only (not water resistant). 
Interchangeable solid and sapphire crystal case backs.
Strap : Alligator leather with square scales, hand-stitched, shiny blue-green. 
Fold-over clasp.
Diameter: 32 mm. 
Thickness: 8.5 mm. 
Number of parts: 452. 
Jewels: 45. 
Power reserve: min. 43 hours – max. 48 hours. 
Winding rotor: 22K gold off-center guilloched minirotor. 
Balance: Gyromax®. 
Frequency: 21,600 semi-oscillations/hour (3 Hz). 
Balance spring: Spiromax®. 
Hallmark: Patek Philippe Seal.