Greubel Forsey Tourbillon 24 Secondes Contemporain Titanium

In 2013, Greubel Forsey launched a new series of the Tourbillon 24 Secondes Contemporain watches with a titanium movement. The initial release was comprised of white gold and red gold case versions. Subsequently, the brand also created a titanium case variant from this range.

Greubel Forsey Tourbillon 24 Secondes Contemporain Titanium

Equipped with a hand-wound movement with patented tourbillon, this timepiece has a power reserve of 72 hours. The main features of this model are 44.50 mm diameter case, convex synthetic sapphire crystal glass and case-back, and dial with multi-level synthetic sapphire hour-ring and gold indexes and hands (hour and minute).

Greubel Forsey Tourbillon 24 Secondes Contemporain Titanium

The Greubel Forsey Tourbillon 24 Secondes Contemporain Titanium watch is limited to 8 pieces. The watch comes with a hand-sewn alligator featuring a titanium folding clasp.

Technical details

Model: Greubel Forsey Tourbillon 24 Secondes Contemporain Titanium

Edition
Limited edition of 8 pieces
With natural titanium movement and case

Movement
Hand-wound movement with patented tourbillon
Tourbillon 24 Secondes • hours and minutes • small seconds • 24-seconds tourbillon rotation • power-reserve

Movement dimensions
• Diameter: 36.40 mm
• Thickness: 10.85 mm

Number of parts
• Movement: 366 parts
• Tourbillon cage: 88 parts
• Weight of the cage: 0.38 g

Number of jewels
• 40
• Olived-domed jewels in gold chatons

Chronometric 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
• Variable-inertia with gold mean-time screws (10 mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Main plates
• Titanium, frosted and spotted, with polished bevelling and countersinks

Bridges
• Nickel silver, frosted and spotted, with polished bevelling and countersinks, straight-grained flanks, anthracite treatment
• 1 gold plate engraved with the individual number
• Synthetic sapphire tourbillon bridge

Tourbillon
• Inclined at a 25° angle, 24-seconds rotation
• Light alloy cage pillars
• Titanium cage bridges
• Gold counterweight

Gearing
• Involute circle profile
• Tangential inclined gear on fixed wheel and profiled teeth on escape wheel pinion

Displays
• Hours and minutes
• Small seconds
• 72-hours power reserve on a sector
• 24-seconds tourbillon rotation

Exterior

Case
In titanium with convex synthetic sapphire crystal
Diameter: 44.50 mm
Height: 15.20 mm
Transparent back with synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs, screwed fixing
Raised polished engraving “Tourbillon 24″ Incliné” and “Greubel Forsey” on a hand punched background
Gold security screws
Hand-polished bezel, caseband with hand-finished straight graining
Two black ADLC titanium plates, engraved, hand-finished with text, screwed to the caseband
Engraved individual number
Water resistance of the case: 3 atm – 30 m – 100 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: In titanium with engraved and black lacquered GF logo

Dial
Multi-level synthetic sapphire hour-ring, galvanic growth hour indexes with Super-LumiNova, engraved and lacquered minute-circle
Gold “12” index with Super-LumiNova
Tourbillon rotation, small seconds and power-reserve indicators in gold

Hands
Hours and minutes in polished gold, with Super-LumiNova
Small seconds (red triangle)
Power-reserve in black treated steel
24-seconds double-tipped hand, black anodised aluminium

Strap and clasp
Hand-sewn alligator
Titanium folding clasp, engraved with the GF logo