Seiko Prospex Sumo Automatic Diver SPB101J1
The Seiko SPB101J1 (SBDC083 ), also known as the Seiko Sumo, is perhaps one of the greatest entry-level sports watches and one of the better built-in Seikos line-up for the money. In 2019 Seiko finally updated their Sumo models giving them a slightly different and refined look, but perhaps most important an in-house improved movement Caliber 6R35.
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