In the watch industry, to say that the ultimate use of high-tech ceramic materials should be considered radar, Isa series is the best witness. If you carefully observe, you should not be difficult to find diving watch bezel also used ceramic material. Rolex introduced in 1926 the first "oyster watch", creating a new era of diving watch. All along, diving watch bezel monochrome ceramic, as the technology matures, Rolex introduced a series of constant-color two-color ceramic diving watch, and for its two-color ceramic word applied for a patent.
Ceramic is a sturdy material that is extremely scratch-resistant, corrosion-resistant and will not fade even when exposed to UV light. For the Rolex who strive for innovation and perfection, this material is suitable for use as a rotatable bezel for diving watches. The Oyster Perpetual Greenwich II is the first watch in the Oyster collection to incorporate the Cerachrom lettering technology. The new Cerachrom lettering was introduced in 2005 with an all-black design. The first Greenwich-style outer ring was first painted in red and blue, half in red and blue, then joined in transparent Plexiglas Plexiglas. This method of production allows the color to be revealed through the Plexiglas Plexiglas coating, giving the outer ring a more three-dimensional look.
Rolex in the Oyster Perpetual Greenwich II watch configuration red and blue bicolor Cerachrom word circle, this design and the advent of the first 1955 Greenwich echoes the outer ring. The word circle more simultaneously reflects the two major achievements, first of all, the production of red ceramic word circle is extremely difficult, so the red is rare on the ceramic; the completion of the red part, the next will have to adjust the chemical composition of each ceramsite, from Inside and outside, turn the half-word circle from red to blue, but also to ensure that the two colors contrast.
The whole Cerachrom word circle is red and blue with the red part representing 6 am to 6 pm and the blue representing 6 pm to 6 am. Integral forming the word circle, very strong, in line with the Rolex watch quality and reliable performance requirements. Like all Rolex Cerachrom wreaths, this design offers outstanding scratch-resistant, corrosion-resistant properties that will not fade even when exposed to UV light.
The ceramic luster makes the lettering appear more three-dimensional, while enhancing the color effect, reminiscent of Plexiglas resin glass lettering of the first Greenwich-type watch. The engraved numbers and graduated scales are filled with a thin layer of Platinum with Rolex patented PVD (Physical Vapor Deposition) technology. Its depth and matte finish, contrast with the polished surface of the word circle, resulting in three-dimensional effect, legible.
The new Greenwich II is equipped with the red and blue Cerachrom word circle. The emergence of this unique high-tech ceramic component has also added several new patents to the Cerachrom word circle that Rolex has been developing since 2005. This design combines the outstanding technical performance of the Cerachrom wreath and the classic two-tone Greenwich-style styling.
In 1959, the brand successfully produced two-color anodized aluminum foil, replacing the original Plexiglas Plexiglas. And later, other color combinations have been released, such as the brown and gold combination of the gold watch, or the burgundy and black two-tone Greenwich II watch in 1982. However, in the eyes of many Greenwich-type fans, the red and blue bezel has always been a classic feature of this watch.
After many years of research, Rolex in 2005 developed a high-performance components assembled on the rotating outer ring ─ ─ patented Cerachrom word circle. The polished surface of this ceramic lettering is extremely scratch resistant and emits a deep, lasting luster contrasting sharply with numbers and graduated scales that are precisely engraved with a thin layer of gold or platinum. Rolex Expertise In order to meet the quality standards and manufacturing techniques of all major watch components, Rolex developed its own expertise, processes and high-tech equipment to make its own ceramic components. The workshops are located in the Plan-les-Ouates plant in the outskirts of Geneva. Rolex finishes all the steps of case and bracelet assembly, including casting alloy or purchasing other raw materials as well as machining, assembling and polishing. From the raw materials to the finished product of the Cerachrom word circle, Rolex fully masters the entire ceramic component production process. With its own in-house technology, Rolex is able to propose innovative solutions and create the components that meet the brand's specifications and quality standards.
Rolex with expertise, in addition to the black ceramic word circle, since 2007 Oyster Perpetual Submariner calendar type and 18ct gold Oyster constant motion yacht Mingshi II unique blue and green Cerachrom word circle . In 2010, the brand went one step further in the development of the word circle technology and succeeded in developing the Cerachrom bezel, which is integrally formed with the Universe Di Daytona. And later, its design evolved, from the initial black to 2013 brown, and the bezel in brown was made of platinum, especially to celebrate the 50th anniversary of this legendary chronograph. Over the years, making the red part of a two-tone ceramic outer ring has never been technically possible. However, the resource-rich R & D department decided to embrace the challenge and eventually succeeded in combining the technical properties of the Cerachrom circle with the classic two-color aesthetics of the Greenwich style.
"Cerachrom" is an abbreviation for "ceramic" (ceramic) and the suffix "chrom" in ancient Greek. The usable color of the ceramic is limited by its manufacturing process. In general, the formation of color from mineral pigments (mineral pigments), these pigments need to withstand high temperature firing, high temperature firing ceramic density, and come to unique hardness. However, the red itself does not have a stable mineral pigment and it is difficult to form a Cerachrom component. However, Rolex started with a secret process to produce a red ceramic. However, for the brand, this innovative technology is only half as successful and, to be more precise, the meaningful red-and-blue Cerachrom word circle to be completed. In the face of the remaining challenges, Rolex engineers finally found the solution. This clever process includes the addition of an innovative coloring process to the production of standard Cerachrom wreaths. In this way, the semi-red ceramic ring can turn blue. For the formation of this color, it is necessary to immerse the part of the circle forming the nighttime (6:00 pm to 6:00 am) with the compound solution of a specified amount. After the solution is added, the ceramic is sintered over 1,600 degrees Celsius to become strong and give the desired color. During this firing process, the ceramic becomes denser and the added compound reacts with the basic elements of the red Cerachrom circle to form the final bluish tone.
This approach may seem simple, but before the progress must overcome a number of technical obstacles: first deployment of red to blue original compound solution; followed by uniform addition of appropriate components of the solution; and then ensure that the two color areas of contrast, clear boundaries Accurate; then it is to determine the actual sintering time and temperature, so as not to deform the entire assembly. All of the above factors are crucial to the success of the process and the quality of the final product.
Oyster Perpetual Greenwich II is the watch of choice for global travelers. This precise, reliable and practical watch, tailor-made for professional pilots, the wearer can simultaneously master the time zone time in both places. A new generation of Greenwich-II watch with two-color Cerachrom ceramic word circle, not only combines the superb Rolex watchmaking process, but also continued this legendary watch in 1955 when the advent of the classic style.
Derived from the original paragraph of the Greenwich II watch model came out in 1982. In addition to the traditional hour, minute and second hand, this watch is also equipped with an independent 24-hour hands and two-way rotating 24-hour progressive scale outer ring. The 24-hour hand shows the reference time of the first time zone (eg residence time), which can be read by its outer bezel scale.
Travelers can learn the time through the hands on the dial. The watch uses a cleverly designed independently adjustable jump pointer, the wearer can easily adjust the time through the crown, will not affect the operation of the minute and second hands, or the first time zone display. Therefore, travelers are able to read both the location and the departure time at any one time. The display uses a 24-hour system that clearly distinguishes between day and night time (for example, 10 am and 10 pm).
If necessary, turn the graduated scale outer ring corresponding hour, you can always display the time of the third time zone. The 24-hour hand will indicate the time zone on the outer ring.
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