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.
The dial has a lot things worthy of talking. First it is about the high readability. White dial has thick black Arabic numeral hour markers, the minute markers are also in black color, it is very convenient for the wearer to catch time from the dial. The big triangle marker at 12 and hour markers at 3, 6 and 9 are applied with Swiss Superlume material, so in dark condition, you will find these four markers will emit a strong green light, this improves the dial readability. There are three working subdials, they are sunken from the main dial. Each small dial works well and features a blue hand. Among them, small seconds subdial is at 9 o’clock, 30-minute chronograph counter and 12-hour chronograph counter are positioned at 12 and 6 o’clock repectively. At 3 o’clock, next to the hour marker, there are two square windows, the left window is displaying current day, while the right window is showing date, both have black font. All hands on the white dial use blue color, not only eye-catching, but also give your eyes fresh outlook.
About the movement, ZF claimed that it is a clone IWC 89361, actually it is modified from a Chinese chronograph movement, we call it Asia Valjoux 7750, whatever behind the solid case back, the movement can completely achieve all functions of genuine watch. Besides, the stability of this type of Asia Valjoux 7750 has been tested for more than 10 years, it is trustworthy.Watch band looks nylon on the outside, but it is actually made of calf leather, you can see it on the back side. The nylon face outside can prevent rain and water drops when washing your hands, while the genuine leather that touches your skin will bring you a great wearing comfort. So such type of band has multiple purposes. The buckle on the band is crafted very well and has a good brushing finish.The review is done, let’s appreciate their acutal photos below.
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