Combining the elegance of the monopusher chronograph with the prestige of a stunning tourbillon shaped like the Maltese Cross, this exceptional new model is issued in a highly exclusive series of 26 individually numbered timepieces.
number of technological breakthroughs enhancing the precision and reliability of its complex
functions, while improving the user friendliness of this highly sophisticated timepiece.
With this “all or nothing” system, the gears and cams cannot be set into motion without actually starting the mechanism, thereby considerably optimising the durability and reliability of the movement. Moreover, thanks to a new “friction” technique for the lateral coupling clutch, the chronograph seconds hand avoids the little jerk that tends to occur when the chronograph is activated.
With the aim of substantially enhancing the precision of the operational sequences, the chronograph uses two hammers instead of one for the start, stop and reset functions. Each exercises pressure on the heart-shaped cams, which turn in clockwise or counter-clockwise directions. The hands are thus brought back to zero. The hammers also return to their original place when the blocking-levers resume their initial position.
It is worth noting that the cone-shaped gear between winding pinion and the crown wheel enables extremely smooth, gentle winding, while the spherical differential (also fitted with a cone-shaped gear) serving to indicate the power reserve also prolongs the movement’s life cycle.
Endowed with a generous 65-hour power reserve, this mechanical hand-winding complication movement is composed of 292 parts, all hand-decorated in keeping with the rules of the watchmaking art. So as to offer a clearer view of the fascinating choreography performed by the tourbillon at 12 o’clock, the developers of the Manufacture have made the carriage move in an unusual way.
Thanks to this slow, steady pace, the ultra-light tourbillon composed of 49 parts – some of them specular-polished – and weighing just 0.55 grams in all, provides generous views of its airy ballet through an extremely wide opening in the opaline dial, while a small blued screw adorning the Maltese Cross points towards the seconds around its rim.
Model: Harmony tourbillon chronograph
Hallmark of Geneva certified timepiece
Only available in Vacheron Constantin Boutiques
Developed and manufactured by Vacheron Constantin
32.8 mm (14’’’ ½) diameter
6.7 mm thick
Approximately 65 hours of power reserve
2.5 Hz (18,000 vibrations/hour)
Bridge hand-engraved with a dedicated 260th anniversary pattern
Small seconds on tourbillon carriage (bluished screw)
Monopusher chronograph (45-minute counter at 3 o’clock)
42 mm x 52 mm, 12.81 mm thick
Transparent sapphire crystal caseback
Water-resistance tested at a pressure of 3 bar (approx. 30 meters)
Blue painted Arabic numerals and red painted minute-track
Blue Mississippiensis alligator leather, hand-stitched, saddle-finish, large square scales
Clasp: Platinum 950 triple blade folding clasp, Polished half Maltese cross-shaped
Dedicated 260th anniversary presentation box
Delivered with a magnifying glass, a dedicated brochure on the Harmony product line and a 260th anniversary celebration letter signed by Mr. Juan-Carlos Torres, CEO of Vacheron Constantin
Limited edition of 26 individually numbered pieces« N° X/26 » and « 260th Anniversary » engraved on the back of the timepiece