Seiko Releases Four JDM “Mini-Turtles” (ref. SRPC35K1, SRPC37K1, SRPC39K1, and SRPC41K1) and Two New Turtle Colorways

Share this story:

One of the biggest releases of 2016—at least in terms of response and overall adoration from press and enthusiasts alike—was undoubtedly Seiko’s SRP77x “Turtle,” a reissue of Seiko’s iconic ref. 6309 diver. I know numerous collectors who own at least one iteration from this series, and to put a fine point on it, I’m wearing my personal SRP777 as I write this post. Now, I love this watch, as do many others, but I’ll concede that it’s not for everyone. At a hair over 44mm, the SRP is admittedly too large for some wrists, and I’ve heard from a handful of people that they’d buy one if the case were a touch smaller.

Well, it looks like Seiko is (or at least, Seiko Japan is) capping off the year with an answer for those very people—introducing the SRPC35K1, SRPC37K1, SRPC39K1, and SRPC41K1 divers, four new watches from the Japanese firm that eager fans have already nicknamed the “Mini-Turtle.” Ok, that may be a bit misleading. This isn’t just a scaled down take, but rather it’s a surprisingly fresh reinterpretation of the SRP template. An evolution, if you will, and the longer you look at this new series you begin to realize it’s more of its own thing.

The 200-meter rated case measures 42.3mm and features a crown at three o’clock, a departure from the ever-so-slightly recessed crown of the SRP, which is positioned at four. The cushion case here is familiar, though it’s different enough from the classic 6309/SRP silhouette. It has a bit of a Seiko 6105-8000/Doxa vibe, just softened around the edges for a more organic look. A Hardlex crystal sits atop the case.


Powering the watch is Seiko’s 4R35 caliber, which offers hacking, hand-winding, 41 hours of power reserve and a beat rate of 21,600. It’s a solid, mid-tier movement from the brand, and it should provide years of reliable service.

The dials here are also familiar, but like we saw with the case, the overall aesthetic is a bit softer. The hour markers are rounded and the elongated day/date at three has been abandoned for a simple date with a rounded cyclops. The handset is the classic sword and arrow combination with only a slight change to the base of the hour hand. As far as dial text is concerned, the watch has all the expected Seiko and Prospex branding.

Left to right: The SRPC35K1 and SRPC37K1.

The SRPC35K1 and SRPC37K1 are both black-dialed, black bezeled divers; in fact, they’re essentially the same watch but for the accompanying strap. The former comes mounted on a stainless steel bracelet, and the latter comes on a two-piece silicone band. Then there’s the SRPC39K1, which boasts a matte blue dial and blue bezel. And finally, we have the SRPC41K1, which is the PADI co-branded iteration with its identifying pepsi bezel, red-lined minute hand, and wavy black dial.

Left to right: SRPC23K1 and SRPC25K1.

In addition to these new models, there are also two new “Turtle” colorways for the Japanese market: one with a black bezel and sunburst grey dial (ref. SRPC23K1), and a second one with a blue/black bezel and what appears to be a blue sunburst dial (ref. SRPC25K1). I will work to confirm the finish of the blue dial.

Pricing on this set is yet to be determined, and I’ll update this space when that information is made available. As I wrote above, these are JDM releases, but if these catch your eye, then you shouldn’t let that stop you when they become available.

Images from this post:

Ilya is worn&wound’s Managing Editor and Video Producer. He believes that when it comes to watches, quality, simplicity and functionality are king. This may very well explain his love for German and military-inspired watches. In addition to watches, Ilya brings an encyclopedic knowledge of leather, denim and all things related to menswear.

  • Mikita

    Yes yes yes yes! 42 mm is what I need.

  • Tom

    YES!! I am definitely one of those who would have bought the turtle if it were just a hair smaller. I can pull off an skx, but the turtle seemed like a stretch. These are so sweet, this is great news!

  • Jeffwb65

    These are all listed, with specs and features, on the Seiko USA website. Hopefully they’ll be available here soon. I want the all Blue on silicone strap.

    • Ranchracer

      Actually I believe that’s the main Seiko site that you’re looking at. The Prospex USA site does not list any of these.

      Anyway, I have larger wrists and have always like the 44mm. Love that new SRPC25K1 blue sunburst dial version. I’ll be ordering that one from a JDM dealer as soon as they’re available. Gotta love eBay!

      • Jeffwb65

        Drat. Yep, You’re right. Oh well, I’ll have to try to get one from a JDM dealer site when they show up.

  • Drazen B

    Seiko exec: “Let’s milk this ‘Turtle’ cow indefinitely. We only released 10 variants in 20 months so let’s add quickly 5 more.”
    Seiko’s most successful recreational diver ever – SKX, has been around for over 21 years, yet there are only 7 variants released.
    I like my 2 Turtles, but this Seiko’s model-color-variation craze of recent times is taking an edge off it, sorry.

    • DGS70

      Milking a turtle cow isn’t as easy as you make it sound.

      • Drazen B

        It appears it’d be easier than you might think.
        Requires a bit of an imagination, though.

    • Eric Goldfisher

      There are more than 7 SKX. 007, 009, 011, 173, A35, A53, A55, A65, the alpinist model that used the skx case, and a few more I’m sure I missed. If the SKX was more modern I’m sure they’d milk it too.

      • Drazen B

        Of course they would. And that’s exactly my point.

  • swillynoodle

    Wow! Yes! This would go perfect with my SKX013. Though, when I read “Mini-Turtle”, I was thinking something along the lines of 40mm, but it seems like 42mm for this case shape should work. I’m just hoping that the lug width is 20 so I don’t have to go out and buy a bunch of new straps.

  • David Crocker

    I am eager to see the balance of the specs. I will bet it has a 20mm lug width….but the height is the spec in question. Perhaps it is more like the SKX013, which is 11.5mm tall, and that would be awesome. My initial thought was ‘will the existing SKX bezel and bezel insert fit on it’ but as someone on a forum pointed out, it appears to be smaller due to the recessing from the already slimmer 42.3mm case width.

    This is a really interesting watch. I have and loved my SRP773 but sold it due to the size and weight. I have a 7″ wrist and it just seemed a tad too large. This new blue model scratches an itch I’ve had since that Turtle left the stable.

  • gw01

    42.3mm is “mini” XD – I so wish they’d done a legit 40mm, would’ve really loved to see a wider gap between versions. Nice move though… 44mm for the average asian is comical.

    • rainmaker

      42.3mm is from case edge to edge. The bezel probably measures just ~38mm. So I expect it to wear much smaller.

  • Kevin Lam

    Based on measurements in Photoshop, it looks like a 20mm lug width!

  • JP. Coqueran

    Still no Orange Turtle…. #Letdown

  • Kian

    I reckon the ‘Mini turtle’ is powered by 4R35 with just date instead of the 4R36 with day date.

  • reus

    When is the release date?

  • TimeandTell

    Don’t you mean the 6r15 or the 4r35 movement? I don’t see a day feature which the 7s26 and 4r36 movements have. Just curious if they are giving the higher end 6r15 like they did with the 3rd gen monster?

    • Thanks for the catch. It is indeed the 4r35 movement. Correction made. -Ilya

  • Peter D

    Mini turtle? Really?? They looked nothing like the ones above and it’s a lame name for sure judging by their size – Terrapins I say.

  • San

    Such a great news!
    Definitely I’ll buy it.

  • orfeas

    I want a mini turtle with sunburst grey dial…

  • Drazen B

    And just as we thought that’s all they came up with…they slip another one, this time an ion plated, blacked-out LE. There’s a lot of thought that went into this SRPC49K model.

  • rainmaker

    Can we have other dial color, like a bright yellow dial turtle? I miss the SKXA35.

  • jcm

    This is great but they left out all the best colors IMO. The Pepsi looks better with a blue dial, the gilt bezel is great, also that new “blacked out” version. Hopefully a sign of things to come, not only in this line but with watches in general.

  • Jeremy

    These are not JDM’s. And unlikely there will be any.
    Not for USA either. Maybe there will be USA models but not at the moment.

  • Kevin Lam

    Is it just me or does it look like the two new Turtle colorways don’t have metallic surrounds on the lume plots? Looks like they are just printed and not applied like previous Turtles.

  • Christopher Shortell

    Can a Seiko with a K1 designation ever be JDM? I thought they were always J models.

Article / Featured

From the Archives: a Look Back at the Seiko “Turtle”

One of the biggest releases of 2016, at least in …
Article / News & Releases

Seiko Prospex Comes to the US

Seiko’s Prospex line of watches has previously not been available …