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2. Citizen Watch - Wikipedia

   en.wikipedia.org/wiki/Citizen_Watch

   Accurate to within five seconds per year, the Chronomaster line is unofficially the most accurate quartz-crystal watch ever made. [ 9 ] [ 10 ] They are currently sold only in the Japanese domestic market but can be obtained internationally if ordered online.

3. Eco-Drive - Wikipedia

   en.wikipedia.org/wiki/Eco-Drive

   In 2012 Citizen announced the Eco-Drive RING Concept Model. This watch features a ring-shaped solar cell surrounding the watch case sidewall. [13] [14] In 2018 Citizen announced it developed the Caliber 0100 Eco-Drive prototype autonomous high-accuracy quartz watch movement which is claimed to be accurate to ± 1 second per year. [15]

4. History of watches - Wikipedia

   en.wikipedia.org/wiki/History_of_watches

   In 2019, Citizen Watch advanced the accuracy of a quartz watch to +/- 1 second a year. [48] The improved accuracy was achieved by using an AT-cut crystal which oscillates at 8.4 MHz (8,388,608 Hz). The watch maintains its greater accuracy by continuously monitoring and adjusting for frequency and temperature shifts once every minute.

5. Chronograph - Wikipedia

   en.wikipedia.org/wiki/Chronograph

   Citizen Atessa Eco-Drive ATV53-3023 analog-digital chronograph with 4 area Radio Controlled reception (North America, Europe, China, Japan) A chronograph is a specific type of watch that is used as a stopwatch combined with a display watch. A basic chronograph has hour and minute hands on the main dial to tell the time, a small seconds hand to ...

6. Quartz clock - Wikipedia

   en.wikipedia.org/wiki/Quartz_clock

   It is also possible for quartz clocks and watches to have their quartz crystal oscillate at a higher frequency than 32 768 (= 2 15) Hz (high frequency quartz movements [4]) and/or generate digital pulses more than once per second, to drive a stepping motor powered second hand at a higher power of 2 than once every second, [5] but the electric ...

7. How the Rolex Daytona Became the World’s Most Coveted Watch

   www.aol.com/rolex-daytona-became-world-most...

   Reference 6234 has more of that wartime look but by the time the ref. 6238 rolls around in 1962—the so-called “pre-Daytona”—it’s clear to see where the world’s most famous chronograph ...