High frequency quartz watches are a fascinating sub-speciality of watch collecting – companies as varied as Omega, Bulova, Seiko, and Citizen itself have all produced such watches, both in the present and the past as far as I can recall the record holder for quartz accuracy until today was actually the aforementioned Citizen Crystron. But it's a major assertion of thought leadership on the part of Citizen to have produced this watch, and to have guaranteed the level of performance it provides, and though there are other firms that hypothetically could have done it, the fact remains that Citizen is the company that put in the work, and did the R&D, necessary to make this a reality. Forty-four years later, the energy problem's been solved thanks to the Caliber 0100's use of solar-power, Eco-Drive technology, which gives the watch a six month power reserve (eight months in power-save mode) and it's worth noting that this is despite the fact that Caliber 0100 runs at about double the frequency of the Crystron. (The watch will run indefinitely if exposed to light on a regular basis the six month power reserve is the running time if the watch is kept in total darkness).ĪT cut quartz crystals were invented in 1938, and while Citizen's Eco-Drive tech is class-leading, other large watchmaking companies with semiconductor capacities also have the ability to deploy similar technology. It was however, an incredible feat for its time, and like the Caliber 0100, it used an AT-cut quartz crystal. That watch was rated to a still-amazing ☓ seconds per year, but the short battery life was a commercial liability. You can always change your preference by visiting 'Cookie Settings' at the bottom of the page.The single biggest problem with high-accuracy, high frequency quartz watches historically has been battery life higher frequency quartz oscillators use a lot of power and when Citizen came out with its 4.1 MHz Crystron Megaquartz in 1975, expected battery life was only about six months (according to Citizen). Blocking some types of cookies may impact your experience of the site and the services we are able to offer. Click on the different category headings to find out more and change our default settings. Because we respect your right to privacy, optional cookies are not set unless you enable them. We would like to set optional cookies to give you a better user experience and to assist us in understanding how visitors use our site. We use Strictly Necessary cookies to make our website work. The information does not usually directly identify you, but it can give you a more personalised web experience. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. Date function so you always have the date right at your wrist.Long lasting and rust-resistant stainless steel case.Eco-Drive is powered by light so you never need a battery, an environmentally-friendly power source.Water-resistant to 100m, great for swimming.With added functionality of a date window at 3 o'clock and numerical second markers embossed on black just inside the case, the style of this watch in no way compromises on performance. With a prominent silver case, matching silver bracelet and black face with large numerical hour markers at 12, 3, 9 and 6, this timepiece is for the brave and the bold. Powered by Citizen's Eco-Drive technology, the WR100 converts any light source into usable energy this means it doesn't require regular battery replacement, and can last up to 10 years. With 100 metre water resistancy, this watch can be worn whilst swimming, so if you're a water baby this watch is a great choice. By Citizen, the Eco-Drive WR100, from the brand's Bracelets Dress collection, unites great functionality with classic style.
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