At the heart of the Deepsea’s case is Rolex’s patented Ringlock system, which uses a super hard, nitrogen-alloyed steel central ring to internally support both the extra-thick sapphire crystal and the Grade 5 titanium caseback. While the Ringlock system is largely responsible for the overall increase in the case size of the Deepsea, it actually enables the watch to be smaller than it otherwise would be, had it were to follow a more traditional case design while still retaining its same colossal depth rating.The primary purpose of the Ringlock system is to reduce the amount of stress placed on the case of the watch. As pressure on the watch increases at greater depths, the majority of it gets exerted on the front and back surfaces of the watch. Since the nitrogen-alloyed stainless steel compression ring internally supports both the crystal and the caseback of the Deepsea, the amount of force exerted on the actual case itself remains relatively minimal. Additionally, as the crystal and caseback get squeezed together, with the majority of the force being supported by the internal compression ring, the front and back gaskets of the watch get pressed together, ensuring an extra tight seal.The caseback on the Rolex Deepsea consists of two components: an inner caseback made from Grade 5 titanium, and an outer, screw-down caseback ring that is constructed from Oystersteel (904L stainless steel). With a traditional, single-piece, caseback design, the entirety of the pressure placed on caseback gets exerted on the case of the watch itself, particularly near the threads. By separating the caseback into two components, Rolex is able to redistribute much of the force being exerted on the rear surface of the watch. The outer, screw-down ring performs the sole duty of keeping the inner, titanium caseback tight on the watch, while the nitrogen-alloyed steel compression ring ultimately supports all the pressure being exerted on the titanium case-back itself.
Titanium is the material of choice for the inner caseback on the Deepsea due to its strong corrosion-resistant properties and its ability to repeatedly flex under stress without developing the same degree of metal fatigue as steel. Since the crystal on the Deepsea will be subjected to the same extreme pressures as the caseback, its scratch-resistant sapphire crystal has been beefed up to be a massive 5.5mm thick, and it is crafted in a domed shape (without a Cyclops magnification lens) to better distribute the pressures being exerted on the face of the watch.Like both the Submariner and the normal Sea-Dweller, the Deepsea is equipped with Rolex’s Triplock winding crown that screws down and uses a system of gaskets to create three sealed zones to protect against moisture intrusion. Additionally, since the Deepsea is a variation of Rolex’s Sea-Dweller collection, its case is equipped with a helium gas escape valve, which allows the watch to safely be used for saturation diving applications.One of the hallmark characteristics of modern dive watches is the degree of the over-engineering present in their designs and the almost-ludicrously excessive performance-statistics that manufacturers are able to achieve. Although the Rolex Deepsea Sea-Dweller is easily the most capable and robust dive watch available in Rolex’s current catalog, only a very slim percentage of its owners will ever require even a small fraction of its incredible underwater functionality. Regardless, the Ringlock system and the case of the Deepsea are the perfect embodiment of form following function, as the watch was specifically designed from the ground-up to be the ultimate deep-sea diving timepiece.
Santos, the one above is equipped with a genuine ETA 2892 movement. However, I recommend the replica Santos with a Sea-gull 2892 movement, because it has a good case, dial, the movement is also quality, but the price is much cheaper.Portofino, this watch has the best version from MK factory. Perfect replica level, 2892 movement.The last one is a Jaeger-LeCoultre. It is the latest good replica in the market. The crystal has a green AR Coating, very unique. Movement uses Tianjin ST17 automatic.
Rolex has graduated from a watch brand into a seismic force to which the regular rules do not apply. While it is far (far) from guaranteed that any Rolex watch you buy will appreciate from the day you bought it, time is showing us that these models, both old and new, endure the fluctuations of the watch market very well indeed.And, in fact, buying a pre-owned model might well be the very best thing you can do in the case of Rolex. Many of the new professional models are simply unattainable without waiting an inordinate amount of time – or without paying an exorbitant grey market mark-up to skip the queue. Older professional models are available for prices below those of a new model, and present the chance to pick-up a potential classic while also expanding your knowledge of the crown.Part of the joy of the watchmaking game is getting to know the tiny ticker on your wrist. Buying modern watches because they are in vogue is all well and good, but it can sometimes be a bit of a rushed exercise (thanks to all that competition). A far nicer, and (in my opinion) rewarding way to pursue this hobby is to consciously decouple oneself from the pursuit of luxury, or status, or the latest trend, and instead put stock in the long road. Read about old models. Pore over their nuances. Allow yourself to appreciate how certain models and certain designs can somehow, almost inexplicably to a modern mind, encapsulate an era so perfectly. These wordless time capsules are worth seeking, as they can, in a single glance, remind us of a simpler time when things didn’t move so fast.My first Rolex was a Rolesor Datejust from 1985. I bought it pre-loved after finally managing to get over my thirst for Pepsi, and having hit the history books in search of inspiration. It cost me around $4,000 and it looked brand new but so satisfyingly anachronistic. Vintage is not for everyone, but before you dismiss it as an option, remember that whatever you like right now will be old someday soon. And it is only with the passing of time that we’re really able to understand what has managed to stand its test.
Sticking with undersea operations, the Oris ProDiver collection is an interesting one, given that Oris is one of the few watch companies that remains actively engaged in dealings with commercial divers. More specifically, Roman Frischknecht is a commercial diver that has been an Oris ambassador for some time, and rather than simply being an ambassador in name, Roman has played a crucial role in the development of the ProDiver collection ahead of its launch in 2009.It was his insight that led to the creation of the brand’s bezel locking system, known as a Rotation Safety System. Given the level of safety and security protocols involved in his line of work, Roman knew that if he was to be using a conventional dive watch in a modern dive environment, there could be absolutely no room for error, thus a locking mechanism (as seen in other divers like the Omega Ploprof, among others) would be mandatory.Although the roots of the Yacht-Master II relate to activities on the water’s surface rather than deep below, its unique functionality is perfectly suited to this category. After all, the Rolex Yacht-Master II is what is often referred to as yachting timer – a countdown chronograph that can be used to properly measure the start time of a regatta, also known as a sailing race.Arguably the most complex watch in the present Rolex collection, the Yacht-Master II uses an interesting combination of bezel position, crown position, and pusher action in order to set its countdown duration between 1 and 10 minutes, with the chronograph capable of flyback (or fly-forward) functionality to the pre-set time with a single activation of its lower pusher. While many Yacht-Master II wearers are unlikely to ever use this highly specific function for its actual intended purpose. being able to run a countdown like this isn’t shy on practical daily-life applications… grilling timer, anyone?
Pilot is a popular series of IWC, and Pilot’s watch is loved by a lot of Swiss watch fans. IWC Pilot’s watch is divided into several branches, they are Mark series, Pilot, Spitfire and Big Pilot. Among them, Mark series and Big Pilot are most popular, while the Spitfire and Pilot chrono are also highly welcomed. I read some history of IWC before, it said that the design of Pilot’s watch got inspiration from the fighter in the Second World War. So I know why there is an airplane sculpture on the case back of some IWC Pilot’s watch, especially on the Spitfire. Today, the IWC Pilot watch I am going to introduce is a limited edition model, it says “150 Years” on case back, does this mean that this model is produced to commemorate the 150th anniversary of IWC Pilot’s Watch? Anyone who knows can tell me about this. The reference number is IW377725, it is limited 1000 pieces in quantity, while you can get this replica watch at any time, its stocks will last for a long time, Z factory offers us a big inventory. Yes, the replica IWC Pilot watch I am going to talk in the following article is made by Z factory, which also named ZF, some website wrote its name “ZF factory”, whatever, they are all correct names. If have ever read my articles, you will know ZF makes the best replicas of IWC, Tudor and some Panerai watches. Now, this Pilot Chrono 377725 is the latest addition to their big IWC replicas family.
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