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SEIKO

SEIKO Prospex Automatic Green Dial Men's Watch SPB121J1

  • Based on 107 reviews
Condition: New
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Availability: Only 1 left in stock, order soon!
Fulfilled by Fast Track Retail
Arrives Sep 13 – Oct 1
Order within 10 hours and 51 minutes
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Description

Green dial. Silver-tone stainless steel case with a brown leather band. Automatic movement. 200 meters / 660 feet water resistance. Buckle clasp. Case size 39.5 mm x 13.2 mm. Seiko SPB121J1 Prospex Watch.

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 5.91 x 3.94 x 1.97 inches; 0.07 ounces


Item model number ‏ : ‎ SPB121J1


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Unknown batteries required. (included)


Date First Available ‏ : ‎ January 20, 2020


Manufacturer ‏ : ‎ Seiko


Best Sellers Rank: #1,665,166 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #7,164 in Men's Wrist Watches


#7,164 in Men's Wrist Watches:


Brand, Seller, or Collection Name: SEIKO


Item Length: 5.91 inches


Clasp: Tang Buckle


Resizable: No


Model number: SPB121J1


Model Year: 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 13 – Oct 1

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • My favorite watch by a mile.
An absolute masterpiece and a staple for any collection! As an intermediate collector with 18 mechanical watches, the Seiko Alpinist SPB121 is easily my favorite. Why it stands out: Versatility: It perfectly balances elegance and utility. You can easily dress it up for formal occasions or wear it daily as a rugged field watch. The Dial: The green dial is stunning. I am highly partial to green watches (they make up 90% of my collection), and Seiko absolutely nailed this shade. Value: At around $795, it is a significant investment, but the durability, beautiful finish, and dependable automatic movement make it an outstanding value. Highly recommended for both seasoned collectors and those looking for their first serious automatic watch ... show more
Reviewed in the United States on July 11, 2026 by Trian Cuyno
    • the real deal cant go wrong with seikos
This the real deal.. It is pricey, cant comment on the things i gave only 3 stars because I dont wear it much because it is so beautiful. A work of Art. Hey, it is a Seiko,,,it will last and can be repaired for 20 years after manufacture. And it will hold its value, I sent a 20 year old divers watch in to Seiko and they still had the parts for it, It puts Rolex's to shame. So does grand Seikos, I do own a gold Rolex and the case is all gold ... show more
Reviewed in the United States on February 5, 2024 by joe e
    • Another brilliant watch from Seiko
This watch is widely admired and widely reviewed. I have little to add, except that the compass feature is very cool. Google it and you will learn how to use it (although it is cloudy and rainy today, so pointing the hour hand at the sun would not be easy). This watch is exemplifies why Seiko is hands-down, the most innovative and admired watch company in the world. Not the only good watch company by a long shot, but from excellent $200 watches to mid-range watches like this and its legendary divers, to collectible Grand Seikos, the company never ceases to amaze. ... show more
Reviewed in the United States on January 4, 2023 by Mark Twain
    • Keeps excellent time
Keeps excellent time. Well worth it
Reviewed in the United States on November 9, 2025 by Russell Hanney
    • Good watch?
This is a very nice watch, but it does have one drawback. Even with the bubble on the date window it is still very hard to read. I had to send the watch back.
Reviewed in the United States on April 29, 2025 by A. Bruton
    • So nice looking on any strap
No regrets purchasing. Crown jewel in the collection of seikos.
Reviewed in the United States on September 22, 2025 by cameron
    • Defective. New?
Received product and was defective out of the box. Had it on auto winder for 4 hours and watch never started. Also, when I opened the box it did not seem like it was packaged like a new watch, I think they sent me used/returned product. Returned the watch same day.
Reviewed in the United States on May 10, 2025 by Randal C. Livingston
    • All the right vibes!
Review Image by TerrelJH
Review Image by TerrelJH
I have been aimlessly searching for a casual, weekend watch. This design flirted with me but spent a few weeks looking for something else. I decided to finally pull the lever and it was the right decision. I wear platinum jewelry but wanted something with two-tones that give me style flexibility. The longer you look at it the more attractive it becomes. Excellent quality and price point. Delivery and shipping was fast. Happy Birthday to me! ... show more
Reviewed in the United States on March 2, 2023 by TerrelJH

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