The chemical composition of synthetic green sapphire includes copper and aluminum oxide, with the copper being the element that is ultimately responsible for its signature green hue. The process of synthetic sapphire production is an expensive and exacting one; however, the additional obstacles that accompany the addition of copper – and the precision required to achieve the right amount of green tint without compromising the strength or clarity of the crystal are likely responsible for its exclusive use on the Rolex Milgauss line of watches.When synthetic sapphire is manufactured, the material has to “grow” over the course of a period of several weeks. Particles attract to one another, forming layers that fuse together to create a dense and ultra-hard substance. The end result of production is a “boule” – a solid piece of synthetic sapphire shaped like a chunky cylinder, which is then cut and shaped to its necessary dimensions.Due to the high costs of production, most watch crystal manufacturers cut their synthetic sapphire boules in a perpendicular fashion, as to maximize the number of crystals that can be created from a single boule. Although this is entirely unconfirmed, it is rumored that Rolex cuts the boule along a diagonal axis to maximize the clarity and strength of the finished crystal. In addition to complicating the cutting and shaping process itself, cutting the boule along a diagonal axis significantly increases the amount of waste, which further adds cost to an already expensive manufacturing process.Despite not making an appearance until just over ten years ago, the green sapphire crystal has quickly become one of the defining characteristics of the Milgauss line. Its pale green tint possesses no functional advantages over a traditional, clear/uncolored synthetic sapphire crystal; however, the green crystal that is exclusively fitted to the Rolex Milgauss 116400GV is one of the primary reasons that individuals seek out this particular reference. The green crystal is something entirely unique to the Milgauss collection and is not something that is found on any other Rolex watch, past or present.
Second, the movement vibration frequency is 28800vph, what shocked us is its chronograph function. Using 7750-2 automatic movement, almost has the same capability as original. It has insurance to be accurate in travel time. So you don’t need to confuse about this problem. With thin and long hand, compared with its big dial, it is more generous in the whole style. Its chronograph counter subdial is located in the place of twelve o’clock, and small second hand stays in the place of six o’clock.Third, the replicas uses leather strap, giving us a good touch feeling with such material. And considering we may has different dressings with various styles, this replica can provide two kinds of straps so that you can change as your like. You can change as domestic alligator strap or America alligator strap. The black leather strap matching with the fold-over clasp, can satisfy your requirement about comfortable feeling and convenience. When we observe it carefully, we see a big IWC logo in clasp clearly. Most of all, the replica is so nice in appearance with any details, you may almost can not find out its difference with the original. And its powerful capability as well.
The dial is in dark grey and got its design idea from the dashboard on Spitfire. So is the replica. Case diameter is 43mm, so the dial looks big. With a sloping inner bezel and sunk subdials, the whole dial looks very three-dimensional. 60-second small dial positioned at 6:00 is for small seconds display, top subdial at 12:00 is for minute chronograph. Small second hand is in striking red. There is a fan-shaped window at 3:00 with a triangle mark that is pointing at current date. White lume is applied on hour markers at 12, 3, 6 and 9, so are on hands.Like case, the bracelet is also made of solid 316L stainless steel, it contains five sections of links. The clasp is so special because it has unique fish-scale patterns, we call them Geneva Stripes that were only found on movement plates before. Deployant buckle has a polished square metal part that has engraving “IWC”. Inside the case, it is a Valjoux 7750 movement, well it is a cloned one, not real Swiss ETA 7750. But the factory used a Shanghai chronograph movement to clone this 7750 movement, if you know something about Shanghai Watch Factory, you will learn that Shanghai 7750 is the most stable chronograph movement used in replica watches. At last, let’s check the watch specification of this replica.
Black dial is highly readable because of those large white hour markers and hands. There are numeral hour markers except at 3, 6, 9 and 12 o’clock. The whole dial design meets the strict military requirement not only because the contrary color usage of black and white, but there are also lume material applied on markers at 3, 6, 9, 12 and central hour and minute hands, so the dial is readable even in the dark. The onion-shaped crown is an iconic feature of Big Pilot, it is very easy to open and rotate, the fit between it and the case is also perfect, so the replica could be water resistant to 50 meters.Finally, it is about the movement, which is an clone IWC 51111 automatic. The movement has a functional power reserve, so the indicator for remaining energy is working, not faux like the one on previous IWC Big Pilot replicas. If you have a chance to own such a replica, you should open the back, and will find the reason why it is is sold at a high price, and the progress the replica watch factory has made.
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