Specially dedicated to passionate collectors and aficionados of high horology creations, the World Time Chronograph Ref. 5930 is a rare offer from the prestigious Geneva based watch manufacture as it incorporates two long-standing Patek Philippe specialties – Chronograph & World Time - that true connoisseurs so far have seen only in a single piece from the 1940s.
To date, only a single Patek Philippe World Time Chronograph is known, a one-of-a-kind piece crafted over 70 years ago. It is wristwatch no. 862442 dated 1940 (Patek Philippe Museum Inv. P996) featuring a dial with pulsimeter and asthmometer scales, and it probably belonged to a physician.
With the Ref.5930, Patek Philippe is now adding the World Time Chronograph as a new member to its regular collection, simultaneously upgrading it to the 21st-century state of the art. This is an ambitious venture, because both the World Time watch and the chronograph have made epochal progress at Patek Philippe since 1940. The mechanisms have become more precise but also more complex, so it was challenging to integrate both functions into one movement.
On the dial, both complications are seamlessly integrated. The outermost display element in blue lists the 24 city names that each represents an entire time zone. It has been updated with new cities for some time zones – for instance Dubai instead of Riyadh or Brisbane instead of Nouméa – and takes into account the fact that Moscow changed its local time from UTC+4 to UTC+3.
A small gap between the city disk and the 24-hour ring accommodates the seconds scale for chronograph measurements. It is a narrow white circular scale with fourth-of-a-second graduations. This subdivision reflects the movement frequency of 4 hertz (28,800 A/h), which allows times to be stopped to an accuracy of one-eighth of a second. The 24-hour ring, which continuously rotates counter clockwise, doubles as a day/night indicator. It has bright numerals on a dark background and a moon symbol for the nocturnal hours as well as dark numerals on a bright background and a sun symbol for the daylight hours.
The new Patek Philippe World Time Chronograph Ref. 5930 launches in 2016 in a version with a white-gold case and a blue, hand-guilloched dial center. It is worn on a hand-stitched matt navy blue alligator strap with large square scales to match the dial. An 18K white-gold Calatrava fold-over clasp keeps the watch comfortably secured to the wrist.
Ref. 5930 World Time Chronograph
Caliber CH 28-520 HU
Self-winding mechanical movement, column-wheel chronograph, vertical clutch, local time, display of 24 time zones, day/night indication
Diameter: Overall: 33.00 mm
Basic caliber: 30.00 mm
Time-zone module: 33.00 mm
Height: Overall: 7.91 mm
Basic caliber: 4.9 mm
Time-zone module: 3.01 mm
Number of parts: 343
Number of jewels: 38
Power reserve: Min. 50, max. 55 hours
Centrifugal mass: Central rotor in 21K gold, unidirectional winding
Frequency: 28,800 semi-oscillations per hour (4 Hz)
Balance spring: Spiromax®
Balance spring stud: Adjustable
– Pulled out: To set the time
– Pushed in: To wind the watch
• Local time in hours and minutes
• Chronograph hand (trotteuse)
• 30-minute chronograph counter
• City disk with 24 place names
• 24-hour ring with day/night indication in colors and sun/moon symbols
Chronograph start and stop at 2 o'clock
Chronograph reset and flyback at 4 o'clock
Time zone adjustment at 10 o'clock (synchronized adjustment of displays in
one-hour steps for the hour hand and 1/24th counter clockwise increments for the city disk and the 24-hour ring)
Patek Philippe Seal
18K white gold
Sapphire-crystal case back
Water resistant to 30 meters (3 bar)
Case dimensions: Diameter: 39.50 mm
Length (across lugs): 48.23 mm
Width (3 to 9 o'clock incl. crown): 42.85 mm
Thickness (crystal to display back): 12.86 mm
Width between lugs: 21 mm
- City disk blue, names printed white
- 24-hour ring with day/night indication in color and sun/moon symbols (day: blue numerals on silvery background; night: white numerals on blue background)
- Center navy blue, hand-guilloched
Applied baton hour markers in 18K white gold
Hours and minutes: Dauphine hands in 18K white gold, 3 facets, Superluminova coating
Parfil chronograph hand in rhodiumed steel
30-minute counter hand, baton style, counter balanced, rhodiumed steel
Hand-stitched alligator with large square scales
Matt navy blue with fold-over clasp in 18K white gold
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