While this watch is essentially identical to the standard, current production Seiko Sumo (SBDC031) in many ways, there are several visual and technical refinements that set it apart.

If you aren’t familiar with the Sumo line overall, it falls in a segment between Seiko’s entry level divers (like the SKX007) and watches like the Seiko Marinemaster SBDX017. The Seiko SBDC027 Sumo 50th anniversary was produced to commemorate the 50th anniversary of Seiko’s first line of professional dive watches released in 1965. So, let’s take a look at what makes this limited, “higher-end” Seiko diver special. Thank you to for loaning us the watch – these have become pretty tough to find. If I didn’t trust my own words before, the fact is really set in stone now – all thanks to my time with the Seiko SBDC027 Sumo 50th anniversary watch. As someone that has spent time with some more “high-end” pieces, I’m confident in saying that really, there’s actually nothing like a Seiko* on the wrist.

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