GMT Balancier Convexe

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  • GMT
  • 2nd time zone
  • Rotating globe with universal time and day-and-night
  • Universal time on 24 time zones
  • Summer and winter time
  • Cities observing summer time
  • GMT pusher
  • 30° inclined Greubel Forsey balance wheel system
  • Hours and minutes
  • Small seconds

Diameter

Caseband diameter: 43.50mm, Bezel diameter: 46.50mm

Height

13.75mm

Back Case

Transparent back with curved and high domed synthetic sapphire crystal, Engraved GMT pusher, Titanium security screws, Raised engraving “GMT” and “Greubel Forsey”

Crown

Titanium, polished, frosted and straight-grained, with GF logo

Water Resistance

10atm – 100m – 328ft

Movement Type

423 parts

Power Reserve

72 hours

Frequency

21,600 vibrations/hour

Jewels

42, Olived-domed jewels in gold chatons