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In 1964, Seiko announced itself on the world stage of sports timing technology with a whole new generation of timing and scoring devices that set a new standard. Ever since, the challenge of sports has inspired Seiko to create new technologies to serve the needs of true sports enthusiasts worldwide. They created their Seiko Prospex line of "serious watches for serious sports". Their aviation collection falls in the Proospex line in which Seiko invented the trigonometric slide rule that allows pilots to make complex calculations in flight.

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