Seiko Turtle vs. Samurai- Dive Watch Comparison

Seiko is a Japanese-based watch firm and is among the most extremely revered watchmakers as a consequence of their many contributions to the trade. Founded in 1881, Seiko has additionally constructed a popularity for growing top-notch timepieces at half the value of its competitors whereas sustaining that signature Japanese stage craftsmanship. Primarily identified for its quartz motion watches – which isn’t stunning because it was Seiko who launched this revolutionary horological motion to the market. Over the years, Seiko has constructed up a extremely respected catalog of implausible watches to select from – protecting all sides of the watch market.

In this text, we can be focusing particularly on their dive watch assortment. Seiko first tapped into this market again in 1965. After a decade, Seiko revolutionized the dive watch trade by being the primary to develop knowledgeable dive watch that has a powerful 600-meter water resistance score. The Seiko Prospex collection has been the flagship watch line of the corporate relating to their sports activities, out of doors, and dive watches. For this event, we can be shining the highlight on two of Seiko’s most distinguished dive watch collection – the Seiko Turtle and the Seiko Samurai.

Seiko Turtle VS Samurai

If you might be acquainted with dive watches, then likelihood is you could have come throughout or personal a Seiko SKX. The Seiko SKX is among the most well-known dive watches out there as a consequence of its spectacular construct and affordable price ticket. It can be an ISO-certified dive watch making it extremely dependable for marine-based actions. However, Seiko has formally discontinued the manufacturing line of their SKX collection which could sound like a significant bummer, however there’s a silver lining to this and that’s with the growth of Seiko’s dive watch assortment.

Now, we now have a slew of choices to select from such because the Seiko Turtle, Samurai, Sumo, and Mini Turtle that are all underneath their Prospex watch line. Each of those dive watch collections delivers its particular twist to the proverbial desk. Not solely are these notable options, however you too can take into account these watch traces as upgrades to the long-lasting SKX. That stated, the key phrase there’s “improve” and it goes with out saying that these options to the Seiko SKX additionally include a various worth improve. Fortunately, Seiko has not forgotten one of many key components that introduced them to the dance, which is providing high-quality timepieces at a significantly cheaper price than its competitors. Overall, the Turtle, Samurai, Sumo, and Mini Turtle are nonetheless comparatively extra inexpensive compared to different manufacturers.

All of the Seiko dive watch fashions that we famous above include an ISO 6425 certification which is principally the “stamp of approval” required for a legit skilled dive watch. These watches additionally characteristic a hand-winding and hacking mechanism which does make the elevated worth comprehensible. For this specific article, we can be doing a side-by-side comparability between the most effective that the Seiko Turtle and Seiko Samurai have to supply. These two Seiko dive watch manufacturers are at present on the high of the mountain of their specific areas, and it’s fairly attention-grabbing to be taught the intricacies that separate the 2 fantastic watches from one another.

Which one is finest suited to your fashion and wishes? Which one has the benefit over the opposite? Which between the 2 Seiko dive watch earns the highest billing on this match-up? Let’s discover out.

Seiko Turtle “Save the Ocean” SRPA21

Seiko Men's SRPA21 Prospex X Padi Analog Hand and automatic, Silver
Seiko Turtle “Save the Ocean” SRPA21 (Image: Amazon)

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The Seiko Turtle, whereas comparatively new to the market because it debuted as not too long ago as 2016, has rapidly taken up the mantle as probably the greatest entry-level divers watch obtainable. The Turtle encompasses a uniquely formed case that takes on the looks of a turtle shell or a cushion, which is the place it bought its title from. The Seiko Turtle additionally exudes a classic aptitude to it which positively provides to the general fashion factors that this Seiko dive watch delivers. A fast little trivia for timepiece fans on the market, the Seiko Turtle is definitely a reissue of the Seiko 6306 watches which had been manufactured again in 1976. The Seiko Turtle upgraded its predecessor’s design by using a brand new motion (caliber 4R36) and ISO-certified 200-meter water resistance.

In phrases of look, the Turtle SRPA21 encompasses a basic dive watch design with its blue dial with a reflective end and a pink and blue tone unidirectional bezel. This specific Turtle dive watch mannequin is a limited-edition mannequin known as the “Save the Ocean” and is among the finest Seiko Turtle watches which you can get your palms on by way of efficiency and aesthetics. The Turtle SRPA21 additionally has a barely sleeker construct than your typical Seiko Turtle fashions with a 44.3mm diameter case.

As for efficiency, the Turtle SRPA21 options Seiko’s caliber 4R36 automated 24-jewel hand-winding motion which clocks a powerful 21,600VPH. This provides the SRPA21 a notably extra correct timekeeping functionality than your commonplace timepiece. This watch motion additionally offers this Turtle dive watch with an honest 41-hour energy reserve. Additionally, the construct of the SRPA21 provides it a magnetic resistance of 4,800 A/m and as a dive watch, it comes with an ISO 6425 certification for a 200-meter water resistance score.

Seiko Samurai “Save the Ocean” SRPD23

Seiko PROSPEX Diver Stainless Steel Bracelet Men's Watch SRPD23
Seiko Samurai “Save the Ocean” SRPD23 (Image: Amazon)

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Along with the Turtle, the Samurai is one other top-tier Seiko dive watch that’s among the many frontrunners of the model’s entry into this watch class. The Samurai has a number of similarities to the Turtle, one among which is that it’s one other re-release collection that originally debuted again in 2004 and lasted as much as 2008. The present technology of Samurai dive watches started in 2017 and made some noticeable tweaks to the unique’s design, particularly, dropping the sword-shaped palms. Other than that, the case design itself was left untouched and retained its sharpish aesthetic.

One component that’s current in all of Seiko Samurai fashions is its slightly assertive {and professional} design. It additionally has a really distinguished crown and bezel that options aggressive angles and patterns that make it worthy of the “Samurai” moniker.

As for the dial, the “Save the Ocean” SRPD23 incorporates a shocking polished blue coloration tone with ocean wave patterns. Partner the attractive blue dial with its polished stainless-steel case and you’ve got your self a genuinely pleasing and soothing timepiece aesthetic. Taking the ocean theme additional, the SRPD23 additionally makes use of harpoon-like palms.

When it involves the Samurai SRPD23 timekeeping efficiency, it manages to get high marks on all fronts. This dive watch makes use of the caliber 4R35 automated manual-winding motion with an analog show. It additionally comes with a date show over on the three o’clock place. This watch motion additionally offers the SRPD23 a 41-hour energy reserve. The case is provided with a unidirectional bezel, which is a must have characteristic in a dive watch. Additionally, the Samurai additionally comes with an ISO 6425 200-meter water resistance certification.


Now, allow us to slim down the strengths and weaknesses of each the Turtle and Samurai dive watches to higher paint a transparent image as to which one is most suited to your fashion and wishes. 

Seiko Turtle


  • Comes with an inexpensive price ticket whereas sustaining top-notch efficiency and construct.
  • The Seiko Turtle comes with an ISO 6425 certification.
  • The Seiko Turtle comes with its signature and visually charming turtle shell-shaped case.
  • There are dozens of Seiko Turtle watch fashions to select from, giving this collection implausible selection.


  • Due to the turtle shell or cushion-shaped case, the Seiko Turtle may not be supreme for these with smaller wrists.
  • This is a vintage-style watch, so when you choose trendy timepieces the Turtle may not be up your alley.

Seiko Samurai


  • Stylish and angular case and dial palms give the Samurai a slightly trendy aggressive edge to it.
  • The Samurai collection has some excellent limited-edition fashions which might be effectively definitely worth the worth for collectors.
  • The unidirectional bezel and crown characteristic a refined and refined sample that’s each aesthetically pleasing and sensible.


  • We observed that the date show in some fashions is barely askew.
  • The bracelets depart a lot to be desired by way of total high quality.

As you will note from our watch overview in addition to our side-by-side comparability down beneath, the Turtle and Samurai are fairly very related relating to their construct.

Mechanically there’s little distinction between the 2 actions used, they’re basically the identical by way of high quality, accuracy and jewels. The distinction is the date window on the 3 o’clock place, the 4R35 (Samurai) has a date calendar complication whereas the caliber 4R36 (Turtle) has a day/date.

It is within the aesthetics that the road can be drawn. The Seiko Turtle encompasses a distinctive classic fashion that makes it a worthy addition to your watch assortment. On the flip facet, the Samurai encompasses a extra subdued and trendy design that enables it to be worn for all kinds of events. Every different issue between the Turtle and Samurai is kind of related, making private desire the deciding issue right here.

Turtle vs Samurai Specs – Comparison Table 


Seiko Turtle

Seiko Samurai

  Seiko Men's SRPA21 Prospex X Padi Analog Hand and automatic, Silver Seiko PROSPEX Diver Stainless Steel Bracelet Men's Watch SRPD23
  Check Amazon Price Check Amazon Price
Model Number SRAP21 SRPD23
Watch Movement 4R36 4R35
Water-Resistant Rating 200-meters 200-meters
Case Diameter 44.3mm 44mm
Case Thickness 13.5mm 13.4mm
Band Material Stainless metal Stainless metal
Band Length 7/8 inches 7/8 inches
Band Width 22mm 22mm
Clasp Type Deployment clasp Three-fold clasp
Dial coloration Blue Blue
Dial Window Material Hardlex Hardlex
Bezel perform Unidirectional Unidirectional
Calendar Type Day and date Date
Special options 41-hour energy reserve 41-hour energy reserve
Item Weight 10.58 ounces 13.62 ounces

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