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Seiko Prospex 3rd Gen"Sumo" Diver's 200m Automatic Green Dial Sapphire Glass Watch SPB103J1

  • Based on 66 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Fast Track Retail

Arrives Jun 10 – Jul 2
Order within 9 hours and 1 minute
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Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 3.15 x 3.15 x 3.15 inches; 10.58 Ounces


Item model number ‏ : ‎ SPB103J1


Department ‏ : ‎ mens


Date First Available ‏ : ‎ September 3, 2019


Manufacturer ‏ : ‎ Seiko


Country of Origin ‏ : ‎ Japan


Brand, Seller, or Collection Name: SEIKO


Model number: SPB103J1


Part Number: SPB103J1


Case diameter: 45 millimeters


Case Thickness: 12.9 millimeters


Band width: 22 millimeters


Dial color: Green


Item weight: 10.58 Ounces


Movement: Automatic


Water resistant depth: 200 Meters


Product Warranty: For warranty information about this product, please click here


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 10 – Jul 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Beautiful Watch
I didn't love the old Sumos, the font never did it for me. When I wanted a new green watch to replace my Alpinist, this model struck me and I couldn't shake it. The upgrades Seiko made were all spot on and they totally listened to their customers. However, from $400 to 800 was a bit of a reach. I think this watch is at home in the $600 range, so yes, i overpaid, but the detail and green, and the overall aesthetic I couldn't get anywhere else. And I've learned that if you see the exact thing you want, you won't be pleased buying something for less that is just close to what you want. I have found most Seiko autos break in over time, this one runs fast, but probably a few mins per week right now still. The bezel dot is ever so slightly off center, that or the second ticks are somewhere. It might be an optical illusion too, but it doesn't really bother me (only for the cost). I still hate the pin and collar because i never have that super secure feeling that they won't fall out - thought I've never actually had an issue. They are a pain to take in and out and screws, especially at this price, would be much better. I love this watch overall. Yes, it's big, but the new lines and Seiko's attention to polished parts vs. brushed, the color of the green, the bezel font and hands is a perfect combo. THere's a lot to appreciate. For the money, my Steinhart Ocean is still my number one, but I did wear this for 2 months straight after buying it, and it's a close second. ... show more
Reviewed in the United States on October 21, 2021 by Andy B.

  • Great watch for the price
Price point is great for an automatic diver. Hefty like any other automatic but very comfortable. Watch is pretty accurate especially if you wear it all day. I suggest an automatic winder if you do not plan to wear it all the time. The Sumo takes pictures quite well but be forewarned, it is not as bright green as a Rolex Hulk or Kermit. For me, the sapphire lens is a huge plus. The luminescent hands and marks are nice as well. Watch was packaged safely and shipped in never touched condition. I'll buy from Fast Track Retail again, without hesitation. P.S. If you buy from a retailer, don't forget to register it on the Seiko site for warranty purposes. ... show more
Reviewed in the United States on December 21, 2022 by Walter Wheeler

  • 3rd Generation “Sumo” with Forest Green Dial & Bezel
Beautiful watch with intricate brushed & polished areas on the the case. A very substantial 190 grams. The curved lugs almost allow it to fit my 6.5” wrist though the 52 MM lug to lug measurement makes for quite a large a watch. Lume is amazing-It even has a “pip” next to the date at 3 o’clock. Wish the white frame around the date window pictured in the photos was not was omitted on my watch. The 20 mm bracelet works well with the unique “sumo” case. New movement with 70 hour power reserve movement is nice but my watch runs a minute or more slow per day. Some better AR coating for the sapphire crystal would’ve been nice. Also “sapphire crystal” is not listed on the case back as with other Seikos I own. Disappointed that the signed crown from the previous generation of “sumos” had has been discontinued. ... show more
Reviewed in the United States on March 31, 2022 by Mtdnvn

  • Took a chance and spent some time but it’s perfect.
I took a chance on an Amazon return product. Thought it’ll be either great or terrible. Turns out the watch only needed some bracelet pins fixed by a local watchmaker. Now it is great! My new daily watch! Beautiful hunter green color.
Reviewed in the United States on January 23, 2023 by Paul

  • Don't go by the pictures
Exactly as advertised Seiko Sumo Hulk. Looks like a really brilliant beautiful Green in the pictures. In pictures it looks like a green Seiko version of a Rolex Hulk. But in person the green is much darker. Almost black in dim lighting. I've had other Seiko watches all good quality. I'm sure this one is the same. But opening the box didn't do anything for me. So I sent it back ... show more
Reviewed in the United States on September 12, 2022 by Wfcd

  • Watch problems
The watch is beautiful. I have been looking forward to buying this model for some time. When I received, the watch came with scratches that were very noticeable. The watch battery continously runs out every 20 minutes or so even when it was worn and fully wound. Would not recommend
Reviewed in the United States on August 9, 2023 by Jacob Jacob

  • Fantastic time piece for the money. Superb quality.
Can’t say enough about this watch. LOVE it. Buttery smooth movement, gorgeous dial. Very few crisp green watches available. This one stands out above the rest!
Reviewed in the United States on July 7, 2022 by Amazon Customer Amazon Customer

  • Good value and great looks!
Perfect! As other reviewers mentioned, the green color is very subtle. In all but bright sunlight the face and dial look almost black. Weight, quality and comfort are outstanding. This is an outgoing model, but I'm fine with that. Waited 2 months to buy, price went down about 40% in that time. Definitely consider a Seiko for your high quality mechanical watch buy. ... show more
Reviewed in the United States on October 19, 2020 by swirthit

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