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1928 Longines Wrist-Chronograph with the 1925 modified Cal. 13.33Z Flyback function. The oldest Flyback Chronograph in existence, to be seen in the Museum of Longines. [1]A flyback chronograph is a watch complication, in which the user can use a reset function without the need to first stop the chronograph, by a single press on an additional pusher at the 4 o'clock mark.
The term chronograph comes from the Greek χρονογράφος (khronográphos 'time recording'), from χρόνος (khrónos 'time') and γράφω (gráphō 'to write'). '). Early versions of the chronograph are the only ones that actually used any "writing": marking the dial with a small pen attached to the index so that the length of the pen mark would indicate how much time had
Seiko later went on to introduce the first quartz chronograph. [5] The year 1969 marked the launch of the Astron, as well as several other wristwatches that Seiko positioned as its own historical models. In the same year, Seiko introduced the Five Sport Speed Timer, the world's first Magic Lever watch with a vertical clutch and column wheel.
It also had stopwatch and countdown timer modes. The tiny controls to turn off alarm or set functions are hard to reach under a small bottom lid. [3] [4] Seiko "Pyramid Talk" clock. In 1984, the Hattori Seiko Co. released their famous pyramid-shaped talking clock, the Pyramid Talk. As a futuristic design object even its LCD was hidden at the ...
Developing quartz clocks for the consumer market took place during the 1960s. One of the first successes was a portable quartz clock called the Seiko Crystal Chronometer QC-951. This portable clock was used as a backup timer for marathon events in the 1964 Summer Olympics in Tokyo. [46]
The text below the image shows the time that corresponds to the movement of the indicator around the stopwatch. A stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation. A large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a ...
A chronograph is a watch with an added duration timer, often a stopwatch complication (as explained above), while a chronometer watch is a timepiece that has met an industry-standard test for performance under pre-defined conditions: a chronometer is a high quality mechanical or a thermo-compensated movement that has been tested and certified ...
The AW-M500 is a more premium model featuring full stainless-steel construction (i.e. case, bracelet and bezel) with the case being the same screw back design as the original AW-500, DLC coating on the inner case and case back, tough solar recharging technology with multi-band 6 radio wave time reception technology, stopwatch, countdown timer ...
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