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2. List of most expensive watches sold at auction - Wikipedia

   en.wikipedia.org/wiki/List_of_most_expensive...

   Finally, any auctioned watch without public online records from auctioneers (e.g. major auction houses) will not be included in the ranking. As of December 2022, the most expensive watch (and wristwatch) ever sold at auction is the Patek Philippe Grandmaster Chime Ref. 6300A-010, fetching US$31.19 million (31,000,000 CHF) in Geneva on 9 ...

3. Chip-scale atomic clock - Wikipedia

   en.wikipedia.org/wiki/Chip-scale_atomic_clock

   Commercial manufacturing of these atomic clocks began in 2011. [4] The CSAC, the world's smallest atomic clock, is 4 x 3.5 x 1 cm (1.5 x 1.4 x 0.4 inches) in size, weighs 35 grams, consumes only 115 mW of power, and can keep time to within 100 microseconds per day after several years of operation.

4. Citizen Watch - Wikipedia

   en.wikipedia.org/wiki/Citizen_Watch

   Citizen Watch Co., Ltd. (シチズン時計株式会社, Shichizun tokei Kabushiki-gaisha), also known as the Citizen Group, is an electronics company primarily known for its watches and is the core company of a Japanese global corporate group based in Nishitokyo, Tokyo, Japan.

5. Casio Wave Ceptor - Wikipedia

   en.wikipedia.org/wiki/Casio_Wave_Ceptor

   A Casio Wave Ceptor WV-200DE watch. The Multi-Band 5 indicates that it can receive time calibration signals from five radio towers in the world The Wave Ceptor series (stylized as WAVE CEPTOR or WaveCeptor ) is a line of radio-controlled watches by Casio .

6. G-Shock - Wikipedia

   en.wikipedia.org/wiki/G-Shock

   G-Shock watches with Multi-Band 6 technology can synchronise with one of the six atomic time transmitters in the world in order to keep accurate time. The following is a list of the six atomic time transmitters: Japan. Watches can tune in to two locations: The 40 kHz signal from JJY at Mount Otakadoya, near Fukushima (Ohtakadoyayama).

7. 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 ...