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.
Part of the brand’s collection since 1945, the Rolex Datejust is the ultimate everyday luxury watch. While the model comes in a vast assortment of styles including different sizes, metals, bracelets, bezels, and dial designs, what remains constant across all Datejust watches is its time and date functionality. The hour, minute, and seconds hands are always placed at the center while the date window is always found at the 3 o’clock position. In true Rolex fashion, the Datejust watch is easy to use and operate but there are a few things to keep in mind when setting the time and date. Read on for our quick guide on how to set the date and time on a Rolex Datejust.Earlier models of the Rolex Datejust did not yet have the quickset date feature. A quickset date feature means that the date can be set independently from the timekeeping hands. Conversely, on a non-quickset Datejust, the minute and hour hands have to be advanced past midnight to change the numeral in the date window.Rolex introduced the quickset date function to the Datejust lineup in 1977 with the introduction of Caliber 3035 movement. So if your Datejust was made in 1977 or later and is powered by Caliber 3035 or subsequent movements (Cal. 3135, 3136, or 3235) then it has the quickset feature.Regardless of when a Datejust was produced, they all come equipped with a screw-down winding crown to ensure the watch’s water resistance. Therefore, a Rolex winding crown must be unscrewed first before any adjustments can be made.
Two important IWC watches are just published by ZF factory in our market, they are from Pilot chrono series of IWC, Top Gun IW389001 and IW389002. Both watches use ceramic case and military-style nylon band. They are good choices for military watch fans. Here I post specification of these two watches.Movement: Asia Valjoux 7750, Real Chronograph Function Case: 44mm*17mm, High Quality Imported Black Ceramic Crystal: Sapphire with Swiss Standard AR Coating Dial: IW389001 with Black Dial, IW389002 with Green Dial. Green Superlume on Markers and Hands Bracelet: Nylon Clad Calf Leather Strap with Deployant Clasp Water Resistant: 30m Both replica watches have black ceramic case that is brushed, whether in the front or sides, the entire case is brushed, both chronograph buttons are also brushed with polished round edge. The case diameter is up to 44mm, because of ceramic material, the case feels heavy. Case back has correct engravings in brushed surface, there are “TOP GUN” sculpture and other engravings.
