Ce communiqué est uniquement disponible en anglais
Press release
Tourbillograph Trackmaster Chromium © Graham
The Trackmaster line of the pioneering automatic column-wheel Chronograph- Tourbillon has been imagined to pay tribute to the brands' passion for dynamism, performance and boldness.
This exceptional timepiece features a very unique and innovative Tourbillon specifically engineered for a “sports” chronograph function-watch assembled on a “tyre effect” strap.
Tourbillograph Trackmaster Chromium © Graham
The Tourbillograph Trackmaster Chromium has been developed in the vein of Graham- London's “high adrenaline” timepieces leading to the creation of a new concept of Tourbillon, a new technology, a new manufacturing process and two new patents. As explorers into virgin territory of mechanical art and craftmanship, it took us four years of unremitting endeavours to develop such a masterpiece.
Powered by a black PVD coated column-wheel chronograph movement featuring a visible R.A.C or “roué à colonne” - greatly enhancing precise operation, this particular time instrument features a unique see-through case construction which allows a fascinating look at the refined mechanism of the “one minute” Tourbillon.
The off-centre construction of the Tourbillon has the advantage of being lighter and therefore more reliable with a better resistance to shocks. The cage weighs in at only 0.485 grams and consists of 48 pieces. The Tourbillon's high precision and durability is reinforced by the unique “Coq” and upper bridge construction which are shaped in the tradition of English high precision timepieces of the 18th century.
Tourbillograph Trackmaster Chromium © Graham
The high frequency of the balance wheel of 28'800 alternations per hour allows better adjustment and guarantees more precise timekeeping than Tourbillons operating at a lower frequency.
In addition, the construction employing a black PVD-coated bridge on each side, one on the front and one on the back, follows Breguet's classical principles of craftsmanship and is much more reliable than a “Tourbillon Volant” with only one bearing. The reinforced Incabloc® shock absorbing system which protects the spiral, the balance, the escapement wheel and the anchor, guarantees excellent shock resistance which is vital for a “sports” Tourbillon with Chronograph function.
Made for sports' and watch-making aficionados, the Tourbillograph Trackmaster Chromium features exclusive material and decorations such as a “Clous de Paris” pattern on the case, black or silver galvanic dials, a large openwork-rotor made of black Chromium and a sterling silver oscillating weight and an integrated rubber strap which together create a dynamic effect and a perfect symbiosis of technology and design.
Technical datas :
Functions:
Tourbillon 1 minute
Chronograph:
- Central second hand
- 12 hour counter at 6 o'clock
- 30 minute counter at 3 o'clock
Hours – minutes in the centre
Movement:
Automatic bi-compax chronograph Tourbillon
Calibre G1781
Frequency:
28'800 alternations per hour (4 Hz)
Components:
403
34 jewels
Power reserve:
42 hours
See-through Tourbillon with 48 components weighting 0.485 gram.
Very high precision setting. Skeleton components of the Tourbillon cage
enable a perfect vision of the mechanism
Highly reliable sporty Tourbillon-Chronograph (2 patents registrations)
Tourbillon escapement with shock resistant conception “Bended” Tourbillon cage: complete integration of the Tourbillon into the movement. Symbiosis between the movement's and the Tourbillon's running
A very high grade decoration of the movement:
Oscillating weight in black chromium plated
Bridges and plates in rhodium plated with circular-grained
Counterpoise in Silver 925 secured by 4 polished screws
Chronographs bridges in sunburst pattern
Brass and steel components with polished-chamfered
Column wheel with polished and black PVD coating
Polished and black PVD coating column wheel
Case:
Stainless steel with “clous de Paris” bezel
Diameter:
47 mm
Thickness:
17 mm
Water resistance:
160 feet or 50 metres
Dial:
Silver dial (ref. 2TWTS.S03A.K47F)
Black galvanic dial (ref. 2TWTS.B05A.K47F)
12 hour counter at 6 o'clock
Snailed decoration on 30 minute counter at 3 o'clock
White superluminescent numerals
Hands:
White superluminescent and galvanic black hour and minute hands
Red chrono second hand 12 hour and 30 minute counter hands in red
Glass:
Domed sapphire glass with anti-reflective coating on both sides
See-through case-back with flat sapphire crystal secured by 6 screws
Strap:
Integrated black alligator strap or integrated “tyres look” black rubber strap
Buckle:
Stainless steel folding buckle
Limited edition:
100 pieces of each dial version
References:
2TWTS.S03A.47F with silver dial
2TWTS.B05A.K47F with black dial
Public price:
39'750 CHF
For further information: Ask Jessica Jacquot: j.jacquot@graham-london.com
www.graham-london.com
