The ref. 16710 is outfitted with a standard 40mm Oyster case with water-resistance up to 100 meters and a protective sapphire crystal over the dial. The bezel is equipped with an aluminum insert in either all-black, red and blue, or red and black. Depending on the year of production, the watch is also available on the secondary market with cases that have either lug holes or no lug holes, and the luminous material on the dial will vary, as Rolex made the switch from Tritium to LumiNova during the production of the reference 16710 GMT-Master II.With the release of the ref. 116710 came a brand new case design that includes the upgrade to a triple-sealed Triplock screw-down crown, a new bezel mounting system that operates on 24 clicks instead of 120, a tougher “Cerachrom” bezel insert crafted from a scratchproof ceramic material, and a “Maxi” dial topped with larger hour markers and wider hands. The 40mm case also received a larger crown guard and wider lugs, earning it the nickname the “Super Case” among collections due to its thicker and more aggressive overall appearance.The ref. 16710 is equipped with the self-winding Rolex Caliber 3185 perpetual movement, which includes a Quickset function for easy adjustment of the date mechanism, hacking, an independent 24-hour hand, and a 48-hour power reserve. However, near the very end of production of the ref. 16710, Rolex switched movements, and later-era examples of the reference 16710 were equipped with the Caliber 3186 movement. The Caliber 3186 has the same specifications as the Caliber 3185 but is now equipped with Rolex’s newer paramagnetic blue Parachrom hairspring and a smoother operating jump-hour hand. With that in mind, all reference 116710 GMT-Master II watches run solely on the Caliber 3186.
Compared with other common IWC Mark series models, this Mark XVIII titanium watch is very outstanding. Grey Titanium case, track-style minutes markers, brown dial and brown leather straps, these elements make the watch full of vintage flavor. The replica is a really a big surprise from GS factory.IWC Portuguese is a very famous watch and it is one of the best-selling dress watches in the world. In our watch market, there are three factories at least that are manufacturing IWC Portuguese watches, ZF, YL and 3A. Among them, ZF is the biggest and most famous one. Actually ZF makes the best quality replica IWC Portuguese watch, they are also the first factory that started to clone genuine IWC Caliber. Like this replica, ZF equipped a clone 79350 movement inside, this is a great improvement, because it is the first time for a factory to use a cloned IWC Caliber in a IWC Portuguese chrono replica watch, we only saw factories used such type of movements in IWC non-chrono Portuguese. The replica is a V2 edition, the V1 uses an Asian Valjoux 7750 movement, now the V2 uses a new clone 79350 like genuine IWC Caliber. This is the biggest difference, while there are certainly other improvement made on this latest version, let’s check it carefully in the following article.
