Aquatimer Perpetual Calendar
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IWC produced the first “digital” watches in its history as early as 1884. These timepieces, known as Pallweber watches, displayed the hours and minutes using numerals, while the seconds were shown in analogue form with a hand. The state-of-the-art Perpetual Calendar Digital Date-Month calendar movement, which is now likewise found in the new Aquatimer family, shows not only the date but also the month in large numerals. The energy required to advance the month display discs is built up continuously throughout the month by a quick-action switch. A spring-loaded lever on the quick-action switch is lifted a tiny bit further each day by a cam. At the end of the month, the tension in the spring has reached its maximum, and it is time for all that energy to be released; the quick-action switch jumps instantaneously to its starting position and advances both of the month display discs individually, or together, by one position, depending on the month. On 31 December, the leap year disc is also advanced at the same time.
Whenever the date display advances, the quick-action switch taps a little of the energy, stores it, and then discharges it at the end of the month.
Among other things, the dial features a perpetual calendar with a large digital display for the date and month.
The distinctive, functional look of the rotor alludes to the reliability of research submarines.
Limited to just 50 watches, the Aquatimer Perpetual Calendar Digital Date-Month is available exclusively at IWC boutiques.
The semi-transparent perforated covers above the date and month discs were inspired by the filter systems on submarine vehicles.
Galapagos marine iguanas are masters of energy efficiency. They bask in the sun on the baking hot volcanic rock for hours on end, storing the energy they need for their strength-sapping dives. In cold water they reduce their energy requirements by slowing down their heartbeat. The conservation of energy, incidentally, plays an important role not only biologically but also in watch technology. In order to advance its large month display discs, the Aquatimer Perpetual Calendar Digital Date-Month requires more power than the in-house automatic 89801 calibre can provide. For this reason, every night when the date display is advanced, the quick-action switch taps a little energy and stores it until the end of the month. With its impressive case diameter of 49 millimetres, the Aquatimer Perpetual Calendar Digital Date-Month is the second-largest wristwatch in the history of IWC – just behind the Big Pilot’s Watch launched in 1940. The unusual combination of materials – 18-carat red gold with rubber-coated titanium – gives the watch an appearance which is at the same time luxurious and sporty. The date and month discs have semi-transparent perforated covers that provide a view of the complex mechanism within. The designers took their inspiration for this particular element from the filter systems that are omnipresent on all submarine vehicles. The rotor behind the see-through sapphire-glass back is distinctly functional-looking and likewise alludes to the reliability of research submarines. The exclusive flagship of the new collection is limited to 50 watches and water-resistant to 10 bar.
Available exclusively at IWC boutiques, the Aquatimer Perpetual Calendar Digital Date-Month in a rubber-coated titanium case with an 18-carat red gold bezel is the flagship of the new Aquatimer collection. It combines the top-quality, state-of-the-art technology with fabulous looks and, with its 49-millimetre case, is the second-largest wristwatch in IWC’s history.
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