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Citizen eco drive chronograph wr100
Citizen eco drive chronograph wr100




Virtually all have crystals vibrating at the same frequency: the aforementioned 32,768Hz, or 32.768 kilohertz this is 8,192 times higher than the frequency of the balance in a standard mechanical watch. Today, most quartz watches are much more alike than different, at least from a basic tech perspective. Unlike mechanical watches, however, a low price was with quartz watches, no longer synonymous with lesser performance.

citizen eco drive chronograph wr100

That watch cost about as much as a then-new Toyota Corrolla, and had a gold case, but as with mechanical watches, economies of scale as well as wholesale adoption of the technology across the entire industry, conspired to drive prices dramatically downward.

citizen eco drive chronograph wr100

The first quartz wristwatch was the Seiko Astron, which was released on Christmas Day, in 1969. This resulted a significant improvement in accuracy over virtually all mechanical watches of the time, and the Accutron would go unchallenged for nearly another decade – until quartz oscillators arrived on the scene. The standard for modern mechanical watches is 28,800 vibrations per hour, which can also be expressed in the total number of complete oscillations per second, or Hertz – 28,800 vph is 4Hz. The first really major advance in oscillator technology for watches, and the first decisive step away from the balance and spring, was the Bulova Accutron, which debuted in 1960, and used an electronically driven tuning fork, oscillating at 360Hz. If you go to the British Museum, you can see one, by Tompion, with a 13 foot pendulum and a period of 0.25Hz). A balance can be made to vibrate fairly quickly – much more rapidly than a pendulum (pendulum clocks often oscillate once every second or two although other periods are possible. You can always change your preference by visiting 'Cookie Settings' at the bottom of the page.As a general rule, and all other things being equal, an oscillator vibrating at a higher frequency will have greater precision than one vibrating at a slower frequency. 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.
  • citizen eco drive chronograph wr100

  • 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.

    citizen eco drive chronograph wr100

    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.






    Citizen eco drive chronograph wr100