GREUBEL FORSEY – GF05 Ttanium GMT Black dial NEW
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GREUBEL FORSEY – Launches Pre-SIHH 2015 GMT Ttanium Black dial
For more than a decade Greubel Forsey has been introducing highly creative ideas, each with a distinctive character. Here, for the second time, the company explores the contemporary timepiece with a titanium case. Treated with vacuum deposited ADLC (amorphous diamond-like carbon), in addition to its striking appearance, this deep black coating gives the watch a surface hardness significantly greater than natural titanium.
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With the movement's main plate and bridges also in black finish, the palette of colours is more restrained. This helps to bring out the contrast between the different textures and surface finishes of each component's decoration.
However, relatively stronger colours are used to subtly highlight all indications of time and technical information. The various dials and indication zones appear to be floating in the space around the terrestrial globe, evoking the night sky with the stars twinkling in their eternal orbits.
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Offering a three-dimensional temporal representation, the rotating globe offers at a glance a highly original view of time all over the world and a new way of perceiving different time zones.
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The terrestrial globe makes one complete rotation every 24 hours anticlockwise – the Earth’s natural rotational direction viewed from North pole – and the position of the continents can be easily cross-referenced with the time on the equatorial chapter ring, which is marked with the 24 time zones and day/night indication.
The night-time hemisphere – 18:00 to 6:00 – is indicated by a blackened half of the ring around the globe, while the daytime hemisphere – 6:00 to 18:00 – is indicated by a whitened portion. The latter is superbly enhanced by a lateral window cleverly integrated into the caseband that lets in light to symbolise daytime.
A worldtime disc bears the names of 24 cities, each representing one of the different global time zones with summer time indicated for those cities where it is applicable.
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The beautifully crafted sapphire crystal disc is connected to the globe and by aligning the relevant city with the correct local hour on the outer chapter ring, the globe will indicate the correct worldtime.
The GMT features a 25° inclined Tourbillon 24 Secondes cage, one of Greubel Forsey’s major patented inventions.
The single inclined tourbillon cage undergoes rapidly changing positions with a high angular velocity, thus minimising the effects of gravity on the regulating organ and maximising timekeeping accuracy.
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The 25° inclined Tourbillon 24 Secondes cage has been chosen for its chronometric virtues, reliability and compact size, which allows space for the other complications.
This unique edition will be composed of just 22 Timepieces worldwide.
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Technical Specifications
Movement
Movement dimensions
Diameter: 36.40 mm
Thickness: 9.80 mm
Number of parts
Complete movement: 443 parts
Tourbillon cage: 87 parts
Weight of the cage: 0.36 g
Number of jewels: 50
Olived-domed jewels in gold chatons
Power reserve: 72 hours
Barrels: Two coaxial series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
Balance wheel: Free sprung variable-inertia balance with gold mean-time screws (10 mm diameter)
Frequency: 21,600 vibrations/hour
Balance spring: Phillips terminal curve, Geneva-style stud
Main plates: Nickel silver, frosted and spotted, hand-bevelled with countersinks, straight-grained flanks, black chrome treatment
Bridges
Nickel silver, frosted and spotted, hand-bevelled, straight-grained flanks, polished countersinks, black chrome treatment
Gold plate engraved with the individual number
Screws of blued, dark blue color
Flat black polished steel tourbillonbridge, hand-bevelled
Tourbillon cage
Inclined at a 25° angle, 24-second rotation
Cage pillars in Avional
Titanium cage bridges
Gold counterweight
Gearing
Involute circle profile
Conical gearing with corrected profiles
Displays
Hour and minute
Small second
72-hour power reserve on a sector
2nd time zone GMT indicator
24 time zone worldtime display
Rotating titanium globe with universal time display
Summer time indicator
Day-and-night indicator
Exterior
Case dimensions:
Тitanium case treated with vacuum deposited ADLC (amorphous diamond-like carbon)
43.50mm (dia), 16.14mm (thickness)
Sapphire crystal
Transparent back with asymmetrical convex synthetic sapphire crystal
Lateral window with shaped synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs
Platinum pusher with raised polished engraving "GMT” on a hand-punched background
Raised polished engraving “Greubel Forsey” on a hand-punched background
Hand-engraved individual number
Gold security screws
Water Resistance: 30m
Crown: In Тitanium with engraved and black lacquered GF logo
Dial
Principal hour-minute dial: in gold, frosted, black
chrome treatment
Hour-ring: white gold
Gold power-reserve sector
Gold small second dial
Gold GMT indicator
Applied gold Greubel Forsey logo
Hands
Hour and minute in polished gold, with Super-LumiNova
Small second blued steel and power-reserve in polished gold
2nd time zone GMT indicator, red triangle
Strap and clasp
Hand-sewn black alligator
Тitanium folding clasp, hand-engraved with the Greubel Forsey logo
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For further information:
Communication Department
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 2301
La Chaux-de-Fonds- Switzerland
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www.GreubelForsey.com
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