The ref. 16710 is available on either a three-piece link Oyster bracelet or a five-piece link Jubilee bracelet with hollow center links and a folded metal clasp. Older references have hollow end-links and a standard clasp, while newer references have solid end-links and a clasp with an additional safety latch. The Jubilee bracelet is the exception and is only available on reference 16710 watches with hollow end-links and a standard fold-over clasp.The ref. 116710 is only produced on a three-link Oyster bracelet. As a newer variation of the GMT-Master II, the bracelet is equipped with solid end-links, solid center links, and a newer Oysterlock clasp with a 5mm Easylink comfort extension system. Many collectors prefer this example of the Oyster bracelet as the redesigned clasp allows the wearer to adjust the length without the use of tools as their wrist fluctuates in humid or hot weather.The GMT-Master II is an absolute legend, there’s no argument about it. What it comes down to when comparing the 16710 and the 116710 is personal taste. Do you prefer the classic styling of an older sports watch? Or do you prefer a contemporary timepiece that has all the latest and greatest technologies? Either way, the Rolex GMT-Master II is a must-have for any serious watch collection.
Rolex is a true pioneer in watchmaking technology. Among their most significant inventions is the Submariner, which was the first watch ever to offer water-resistance of up to 100 meters. The now-iconic Rolex Two-Tone Submariner was the inspiration behind the flourishing dive watch market as we know it, and almost every dive watch in existence today was in some way influenced by the Rolex Submariner. While it was developed for use while underwater, the Submariner has since become a coveted timepiece among collectors of all professions. The line is varied and offers a feature set to suit almost any wrist. However, today we will take a closer look at an earlier model of their Rolesor two-tone steel and gold Submariner ( Rolex Submariner two-tone ). The Rolex 16613 Two-Tone Submariner.The Rolex Submariner was developed in 1953 and made its official debut a year later at Basel Watch Fair 1954. As previously mentioned, the collection was the first to offer resistance to depths of up to 100 meters, which would then evolve into 200 meters, before increasing once again to its current and impressive 300-meter depth rating. In true Rolex fashion, the Submariner was carefully refined over the years to include a safer unidirectional bezel, improved materials, and a higher-beat movement.The original model was presented in stainless steel with an all-gold variation following in the late 1960s and a two-tone option coming to market in 1984 via the ref. 16803. The ref. 16613 was released a few years later in 1988 and enjoyed a long production run before being discontinued and replaced in 2009 with the current Cerachrom ceramic bezel 6-digit ref. 116613, marking the end of the aluminum bezel Rolex Submariner two-tone watches.
The green-tinted sapphire crystal fitted to the reference 116400GV Milgauss has quickly become one of the defining characteristics of Rolex’s anti-magnetic line of watches. The Rolex Milgauss was first introduced in 1956; however, it was not until 2007 that it received its now-signature, green sapphire crystal – an exclusive feature that was originally introduced as a way for Rolex to celebrate the 50th anniversary of their Milgauss line.No other watch in Rolex’s current catalog is fitted with a green-tinted (or any other color) sapphire crystal. However, at the present time, all Milgauss watches that are currently in production leave the factory with green sapphire crystals. Rather than simply being a layer or coating, the light green tint is present throughout the entire material of the crystal, and will not fade or discolor after prolonged wear and use.Rolex claims that it took them many years of research and development to master and perfect the secret procedure of manufacturing their green-tinted sapphire crystals and that the actual process of producing the crystals takes multiple weeks. What is most interesting is that despite a usual eagerness to patent their various in-house technologies, Rolex claims that the green sapphire crystal in the Milgauss is “not patented, as it is so difficult to make that no one else would even venture to try.”Rolex will never reveal their exact formulas and secrets about how they manufacture the green-tinted sapphire crystals fitted to the Milgauss; however, we do know some general information about green-colored synthetic sapphire and the production of sapphire watch crystals as a whole.There are a number of different ways to produce synthetic sapphire, all of which fall into the following general methods of production: melt growth, solution growth, and high-temperature/high-pressure growth. It is hypothesized that Rolex uses a hydrothermal method of production for its synthetic sapphire crystals, which is slow, expensive, and uses heat and pressure to imitate the conditions present deep inside the earth that is responsible for the production of naturally-occurring crystalline gemstones.
Two important IWC watches are just published by ZF factory in our market, they are from Pilot chrono series of IWC, Top Gun IW389001 and IW389002. Both watches use ceramic case and military-style nylon band. They are good choices for military watch fans. Here I post specification of these two watches.Movement: Asia Valjoux 7750, Real Chronograph Function Case: 44mm*17mm, High Quality Imported Black Ceramic Crystal: Sapphire with Swiss Standard AR Coating Dial: IW389001 with Black Dial, IW389002 with Green Dial. Green Superlume on Markers and Hands Bracelet: Nylon Clad Calf Leather Strap with Deployant Clasp Water Resistant: 30m Both replica watches have black ceramic case that is brushed, whether in the front or sides, the entire case is brushed, both chronograph buttons are also brushed with polished round edge. The case diameter is up to 44mm, because of ceramic material, the case feels heavy. Case back has correct engravings in brushed surface, there are “TOP GUN” sculpture and other engravings.
