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Seiko Chronograph Quartz

Introduced in 1983, Seiko's 7A28 movements were intended as their best efforts in designing quartz-controlled chronographs. As with the JLC and Piguet movements, this now seems rather quaint, if not misguided, but at the time these held real chorological significance. While the Swiss firms were naturally trying to preserve their vital traditions from the seemingly-past mechanical age, Seiko dove right in and produced the world's first all-analog-display quartz chronograph. Even though these watches were relatively modestly priced, the 7A28s inside were clearly intended to be permanent movements. Most unusually, the mechanism is fully jeweled (15), uses no plastic parts, and allows for simple regulation by the user. A separate motor is provided for each indicating function, and the button at 10 o'clock temporarily stops the chronograph hands' motion as actual timing continues, providing an odd sort of "split-second" function. Best of all, while the main chrono-seconds hand moves at the typical quartz once/second, the hand within the subdial at 3 o'clock races along at a most entertaining 20 steps per second.

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