Seeing black also has its good sides as Chronoswiss now proves with new case variations on some well-loved timepieces: the skeletonized automatic chronographs Opus Chronograph and Grand Opus Chronograph are now available in black.
Behind the mysterious “darkening” is an innovative coating that goes by the name of Dianoir®, which is based on pure carbon and belongs to the family of diamond-like carbon, known in the industry as DLC.
Different from many commercially available coatings that are physically created from a gas in a vacuum chamber using chemical reaction (PE-CVD) or through condensation (PVD), the DLC coating Chronoswiss uses called Dianoir® is the result of a novel, patented process.
Using a pulsating ray of light, a plasma is created in a vacuum environment that is aimed at the substrate to be coated. Thus, a much higher amount of diamond is created that produces more than double the hardness of the coating: more than 5,000 HV (Vickers) in contrast to the hardness created in the usual process that ends up at 2,500 HV.
It was not only the extremely robust and high-quality character of the ultrahard coating that prompted Chronoswiss to use it, but also its exceptional aesthetic qualities: the transparency of the skeletonized models in their new “light” seems almost like black magic, opening a totally new perspective into the inside of the black case for the observer. So that the signs of the times cannot be overseen, the hands are painted bright red and/or luminous white.
This innovative coating of diamond-like carbon lends the Grand Opus Chronograph and Opus Chronograph models a fully new look—the “dark side” of the fascination of mechanics.
Models: Opus Chronograph CH 7525 S & Grand Opus Chronograph CH 7545 S
Type: Skeletonized chronograph, automatic
Sweep hours and minutes, seconds, analogue date, sweep chronograph seconds, 30-minute counter, 12-hour counter
Solid 39-part case, fluted screw-down bezel with full thread and antireflective sapphire crystal, screw-down polished case back with full thread and anti-reflective sapphire crystal, onion-style crown (crafted in solid metal of the case), screw-in lugs with patented Autobloc System, water-resistant to 3 atm
Opus Chronograph: Ø 38 mm, height 14.6 mm
Grand Opus Chronograph: Ø 41 mm, height 14.6 mm
Case variations: Stainless steel with DLC coating (Dianoir®)
Chronoswiss Caliber C.741 (base caliber ETA Valjoux 7750)
Modification Skeletonization of the chronograph
Diameter Ø 30 mm (13 1/4´´´)
Height 7.90 mm
Jewels 25 jewels
Balance Glucydur, three-legged
Balance spring Nivarox I
Fine adjustment Via excenter cam
Shock protection Incabloc shock protection
Frequency 4 Hz., 28,800 vph (oscillations)
Power reserve Approx. 46 hours
Special features : Skeletonized and gold-plated rotor with côtes de Genève, ball
bearings, polished pallet lever, escape wheel and screws, bridges and base plate with perlage, a number of chrome-blackened components
Individually numbered, metal dial, painted black
Hands: Steel hands painted red and/or white, hand-finished, Breguet
Louisiana crocodile skin
Clasp : Buckle or folding clasp