SEIKO Coaxial Flyback Chronograph ref.7016-5020 cal.7016A / Export Only

— Structural beauty held in a coaxial layout —

A Seiko 7016-5020 chronograph made in the 1970s.

An export-only model developed for overseas markets.

A design that inherits the line of the Cal.6139 and reaches a further level of completeness.

— What makes the Cal.7016A singular —

The movement is the Cal.7016A, an automatic mechanism announced in 1971.

Its defining feature is the coaxial chronograph: a construction that stacks a 30-minute counter and a 12-hour counter in the sub-dial at six o'clock.

— A world thinness record —

The Cal.7016A achieved a thickness of 6.4mm.

For sixteen years, from 1971 to 1987, it stood as the world's thinnest automatic chronograph.

That record held until it was broken by the Piaget Cal.1185.

— A flyback mechanism —

The Cal.7016A has a flyback function.

Operating the reset while the chronograph is running sends the hands straight back to zero and continues timing from there.

A design suited to aviation and measurement use.

— The scarcity of an export model —

Very few 7016-5020s circulated in Japan, and it rarely appears on the market even as a re-import.

A day display in English and Spanish and a number of distinctive dial arrangements are among its features.

A watch indispensable to any account of Seiko's technical history.

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