If you have ever bought one IWC Mark replica, you will know the best one is equipped with a ETA 2892 movement, so is this Mark XVIII. Other versions are not as stable as this one. The band also offer wearer the greatest satisfaction, because the outer material is nylon while the inner lining is black leather, there are some mysterious words on the leather lining like “BTAI” and “BTAN”, could someone here tell me the meaning of these words?For men, owning a dedicate wrist watch is like an amazing artwork in hand since its beauty is so unforgettable. Yes, now I am going to introduce a replica IWC Portuguese IW500705, it is really a classic artwork. It is the edition of V2S, its workmanship is almost perfect, and near original on the whole.
The Rolex Submariner has been a part of the Rolex catalog for well over 60 years. As expected, the famed dive watch has undergone plenty of design and mechanical enhancements over the past six decades, including the all-important timing bezel. Read on to discover all the different types of bezels of the Rolex Submariner.When Rolex debuted the Submariner in 1953, the stainless steel dive watch included a rotating bezel marked to 60 minutes to allow divers to track immersion times. The steel bezel turned both ways for simple timing adjusting, the edge of the bezel was knurled for easy gripping underwater, and the insert was fashioned from black aluminum.The printed 60-minute scale on the earlier versions included markings for every 5 minutes, alternating between batons and numerals. By the late 1950s, Rolex started to include hash marks for the first 15 minutes on the bezel followed by 5-minute markings.Around 1969, Rolex introduced the first yellow gold Submariner, the Submariner Date ref. 1680/8. Accordingly, the knurled rotating bezel was fashioned from 18k yellow gold. What’s more, the Rolex Submariner ref. 1680/8 now offered the choice of either a black or blue aluminum bezel insert and matching dial.
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.
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