Seiko Mens Sumo Prospex Diver 200m Watch SPB101J1

Product Information

The Sumo case is a piece of art with all its mix of brushed and polished surfaces. The detail of the rotating bezel entering the case is stunning.

As a dive watch should, the SPB103j1 offers great legibility. It has large hour markers and hands which provide excellent contrast against the green dial. The watch has applied hour markers with polished metal frames and applied Lumibrite. The minutes and hour hands are sword-shaped and are quite wide. The watch is presented with the now-iconic ”Sumo” case which is, as mentioned, large, bulky, and sturdy. The bracelet goes very well with the sporty design of the watch, but some may be surprised to see a 20mm bracelet for a case of this size. In our opinion, it works very well.

I’m extremely pleased by the quality of the newly introduced sapphire glass, always shiny and clear, so much that it seems to disappear from the view when you look at the dial under certain angles.

Yes, the Seiko Prospex Sumo SPB101J1 is water-resistant up to 200 meters. This makes it suitable for swimming and diving. Lastly, the Orient Kamasu (RA-AA0004E19A) is another comparable watch to the Seiko Prospex Sumo. It features a similar design with a stainless steel case and a reliable automatic movement. However, the Kamasu has a slightly smaller case size and a more affordable price point, making it a great option for those on a budget.

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There are some updates though, mainly for the bezel and the dial. First, the still bezel retains its coin-edge profile and is still unidirectional with a 60-minute scale. Yet, you’ll notice that the insert has new fonts, without the extended “fat” numerals. It does, however, retain its internal facet. The second evolution regards the crystal. Previously made in mineral “Hardlex” glass, Seiko fits its new Sumo SPB103J1 with a sapphire crystal. The dial is definitely the highlight of this watch as it has a lovely vibrant green color with a beautiful sunburst brushed finish. Due to the sunburst effect of the dial, it reflects the sunlight beautifully, and changes look from a fir green to a striking bright emerald color.