Published by David Deteve in Seiko on 05/25/2026 at 8:25 p.m.

Seiko Sumo

The Seiko Sumo is the kind of diver that commands respect at first glance. Thick case, enormous presence on the wrist, deep dial... it doesn't try to please everyone. And honestly? So much the better. Underwater as well as in everyday life, the Sumo gives off that rare sensation of a “tool” watch that has become cult over time. A real block of Japanese steel. In short, a Seiko with character. A lot.

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A massive but surprisingly comfortable diver, supported by an ultra-worked design and a real visual personality. The green sunray dial, the quality of the case and the general fluidity of the design largely dominate the feedback.

Bezel & handling 4.8/5

Movement & precision 4.6/5

Value for money 4.9/5

• Case considered exceptional in this price range
• Comfort much greater than its size suggests
• Very visually pleasing sunray green dial
• Powerful Lumibrite and excellent readability
• Bracelet considered correct but not perfect
• Hardlex less premium than sapphire for some users

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