Citizen atomic/radio controlled wristwatches for sale

The precise time. All the time.

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What is the ideal system for precise timekeeping?Capturing a time signal from an atomic clock accurate to 1 second every 100,000 years,iRadio-Controlled auto-corrects the time and calendar in your watch.Combined with CITIZEN"s light-powered Eco-Drive technology,the result is ultraprecise timekeepingwith no need to lớn replace batteries or adjust the time.In 1993, CITIZEN released the world"s first multi-band radio-controlled watch.As a pioneer, we continue khổng lồ lead the field.

Margin of error:One second every 100,000 years

3... 2... 1... Happy New Year! With a Radio-Controlled watch, you can be sure that your personal New Year countdown will be bang on time. The atomic clocks from which Radio-Controlled watches receive their time signals are accurate to an astonishing margin of one second every 100,000 years. By synchronising with the most accurate time source in existence, your watch will always tell you the precise time.


The right time. Automatically.Every day

Adjusting your watch is a bore. Radio-Controlled does away with all that anxiety và fuss. In the middle of the night when the noise from smartphones is at a minimum, it automatically synchronises to the correct time. Radio-Controlled, in other words, fine-tunes itself every day of the week so that you don"t need to lớn worry about resetting your watch anymore. Ever.


Time signal reception technology

This giải pháp công nghệ automatically updates the time và date based on a time signal from an atomic clock with a margin of error of one second every 100,000 years. In Japan, it receives signals from the Mount Otakadoya Standard Time Transmitter in Fukushima và the Mount Hagane Standard Time Transmitter in Kyushu, meaning that it covers the whole country.

Receives signalsin 4 geographic regions*

Radio-Controlled operates based on the reception of a time signal from transmitters in four different regions: Europe, the United States, China, & Japan.

* Applies to world multiband models.

* map is a rough illustration only.

* Concentric circles indicating time signals on the map are purely for illustrative purposes and do not indicate actual ranges.

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* Different models have different coverage

* Reception can be affected by radio noise, local topography, buildings & weather.

* Time differences và city names may change depending on the country/territory.


Three functionsfor precise timekeeping

CITIZEN has developed a proprietary technology that makes precise timekeeping possible by combining three functions: an antimagnetic function, an impact detection function và an automatic hand correction function.


The ultimate goal ofthe world"s watchmakers

"Genuinely precise timekeeping" was an unobtainable goal that still lay beyond the grasp of the watchmaking community when in 1989 CITIZEN decided khổng lồ develop a watch that would display precise time based upon the reception of radio waves. CITIZEN had no background in this field, meaning that there was a veritable mountain of technological challenges we had to lớn overcome. Lacking the proper equipment, we had, for example, to rig up an antenna close khổng lồ the window of the R&D laboratory & build our own devices to measure receiver sensitivity. Weeven developed our own integrated circuit compatible with time signals (not available in japan at the time), and grappled with how lớn miniaturise the antenna.

The world"sfirst multi-band radio-controlled watch

It was after overcoming many technological challenges that in 1993CITIZEN launched the world"s first multiband radio-controlled watch. Signal reception sensitivity depends upon the antenna but is prone to interference from the metal watchcase and other metal parts. That"s why we went for a bold, counterintuitive look with the antenna right in the centre of the dial. "Look at me! I"m a radio-controlled watch!" the kiến thiết proclaimed.


The world"s firstlight-powered radio-controlled watch

In 1996, CITIZEN developed the world"s first Radio-Controlled model incorporating Eco-Drive. We placed the antenna on the 9 o"clock side of the case, improving both reception & design. The addition of light-powered technology và automatic signal reception eliminated the hassle of adjusting the time & replacing batteries.

Towards a more discreetand attractive design

Radio-Controlled had evolved khổng lồ the stage where the design no longer stressed the radio-controlled theme.Having producing a model with the antenna on the side, in 2001 we produced a model with the antenna built into a ceramic case và an Eco-Drive model with reduced nguồn consumption. By improving the antenna and the receiving circuit we dramatically boosted reception sensitivity, meaning that in 2003, we were able khổng lồ produce the world"s first radio-controlled watch with a full metal case—something until then believed to lớn be impossible.

Smaller,thinner và more varied

Following the introduction of the Eco-Drive Radio-Controlled mã sản phẩm with full metal case in 2003, Radio-Controlled established itself as one of CITIZEN"s vi xử lý core technologies. In a quest for smaller, thinner, more elegant, và more varied watch designs, we further miniaturised the antenna & made the movement smaller by reducing energy consumption.The picture below shows 15 years" worth of antennas from 1993 to 2008. You can see that the antenna grew significantly smaller over time. The challenge, however, goes on. CITIZEN"s quest for the perfect size never ends.