Powered by a new three-day movement, a mechanical GMT diver's

Seiko is one of the few fully integrated watch manufactures. We design and develop our own movements using leading-edge technology.

SLGA001G Grand Seiko

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SBGM221G Grand Seiko

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43mm 1701 Pontchartrain® Great Lakes Edition GMT Diver

Powered by a new three-day movement, a mechanical GMT diver's watch joins the Seiko Prospex collection for the first time.

Seiko's Popular Diver: Prospex 1968 Diver's Modern Re-interpretation GMT, SPB381

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Seiko] 5 Sports GMT : r/Watches

Seiko 5 SSK001 Automatic GMT Orange Dial Watch – Carat & Co.

Just picked up this Seiko 5 GMT [SSK003] but I'm thinking of returning. For the pros out there, would you keep the GMT or would you take it back and just get