SEIKO 5 Sports Automatic Military style SBSA121 Made in Japan

$263.88 USD
$263.88 USD


The SEIKO Five logo has been renewed.
Here is the new Seiko Five introduction.


      • Listed Price: 42,900 JPY
      • Case Stainless Steel with Shabby Chic processing
      • 20mm Lug size
      • Strap: Calf leather
      • Curved Hardlex Crystal
      • Luminous: Hands Indexes
      • Dial: Dark brown
      • See-through back (Mineral crystal)
      • Water Resistance: 10ATM
      • Diameter 39.4 mm (w/o the crown) Thickness: 13.2mm Length: 48.1mm
      • Weight: 75g
      • Max wrist size: 205mm (8.07in)



      SEIKO Automatic 4R36

      • 24 Jewels
      • With Hand-winding and Hack function
      • Power reserve: 41 Hour
      • Accuracy: +45/-35 sec/day
      • Instructions
      • Seiko original box
      • Seiko Japan official domestic one-year warranty
        (Please contact us first in case of repair during the warranty period.)
      The SEIKO 5 is a durable, reliable, and affordable automatic watch that has become a worldwide bestseller.

      Old Seiko 5 sports logo


      In 1968 when it first went on sale, the 5 stood for the following five points.

      1. Automatic winding
      2. Waterproof
      3. Day-date display
      4. Dia Flex(unbreakable spring)
      5. Dia shock (It won't break even when dropped)
      (According to The Seiko Book / Tokuma Shoten


      This is the same SEIKO 5 Sports with a newly designed logo.



      The meaning of the 5 has also changed.
      The new meaning of 5 is as follows:


      1. Automatic winding
      2. Waterproof
      3. Day-date display at 3 o'clock
      4. Crown at 4 o'clock
      5. Durable case & band


      Seiko has also introduced the military-style SEIKO 5 Sports.


      Although it is SEIKO 5 Sports, it also, unfortunately, has the crown at the 3 o’clock position. That aside, it still turned out really cool.


      The Military style comes standard with the crown at the 3 o’clock position, so lets let that one slide.

      -- About Day-date display --
      This model has both English and Japanese(Kanji) day wheels. (switching by a crown)
      English: MON, TUE, WED, THU, FRI, SAT, SUN
      Japanese: 月、火、水、木、金、


      Customer Reviews

      Based on 10 reviews
      Lightning fast shipping and great service every time!

      This is my second order from Seiya and both have been so fast and efficient with very good communication/tracking. Love this kind of service!

      Awesome watch, awesome seller!

      I picked up the last one of these from Seiya and I'm really happy that I did. I really wish you could get the kind of service and quality with companies here in the USA. I will definitely do business with Seiya again. The watch is awesome too! Cheers from Portland.

      Meng T.
      My recent purchase of the

      My recent purchase of the SBSA 121 was exceptional. Fast shipping and great packaging. The watch is well balance and the face is beautiful. Excellent service from Seiya too!

      GLENN N.
      Super happy with the watch.

      Super happy with the watch. 39.4mm is just perfect for my small wrist. Brown dial is fantastic. I always buy watches from Seiya with Kanji characters. So glad Seiya always have models that are not available here in the USA.

      Simon K.
      100% :+1::ok_hand:

      100% :+1::ok_hand:

      Alex C.
      No surprise to Seiko build

      No surprise to Seiko build quality. I like the date in Japanese print. Also super fast delivery by Seiya Japan, , this is my second buy, first was MM300, a great purchasing experience. Highly recommended.

      Excellent watch and Excellent service from Seiya (again)

      The watch is perfect, exactly what I was looking for. Shipping was super fast no problems at all. Multiple repeat customer, Seiya is definitely one of my go to places for watches. It a pleasure doing business with them. It’s like having a friend in Japan!

      David K.
      Beautiful military/field watch from Seiko.

      Beautiful military/field watch from Seiko. 39 mm case size is perfect and love the new hacking movement. Seiya as always provides the best service and fast shipping!

      Beautiful Watch, Great Shopping Experience

      This watch is beautiful. I have its older sibling the SNZG to compare this to. The size is perfect, movement is upgraded and the build is much better. It fits and wears very well on the wrist but its the dial that steals the show. Its a very beautiful brown espresso that has plenty of depth and character. If you're thinking of getting a field watch in the 200 to 1000 dollar range...get this one and more importantly get it from Seiya enthusiasts partner that is competitive with pricing and far more superior in customer service than those other online shops.


      This is my first purchase from Seiya Japan and couldn’t be more impressed. I ordered this on 9 July and received it all the way in Oklahoma City, Ok on 12 July. Outstanding. The watch is beautiful. A darker case than I anticipated but beautiful none the less. The brown dial is deceptively just cool. Looks gray until it hits the sunlight then you see the brown. I can’t tell if the leather strap is black or chocolate brown either way it’s a pretty good strap with Seiko stamped on the buckle. All in all very happy with my purchase and will definitely buy again.