Seiko Prospex LX Goes Back to its Aquatic Roots with the Launch of the SNR045J1

Seiko’s LX line, the all-encompassing sport-luxury extension of its Prospex collection, was introduced last year. The “LX” lettering in the series’ name is derivative of the Latin word “lux,” meaning “light” in English — a subtle nod to the way light reflects off the flat surfaces of the watch’s case. The new Seiko Prospex LX SNR045J1, limited to 500 pieces, takes the LX line back to its aquatic roots in Antarctica, where Seiko’s first 300-meter diving watch, the 1968 Divers’, was initially tested. 

The new Seiko Prospex LX SNR045J1

The surface of the new model’s curved ceramic dial is brushed in an anti-reflective coating, while the arrow-shaped hands, applied indices, and bezel are coated with “LumiBrite” — Seiko’s “long-lasting” luminous material that it claims “is completely free of radioactive materials.” The inspiration for the mossy green dial came during the company’s quest to the Skarvsnes Foreland, located roughly 55 kilometers away from the Japanese Showa research station in Antarctica. During this period, Seiko’s team of researchers, who were testing the watch to ensure the movement could withstand various types of harsh environments, discovered a “mysterious underwater forest of moss pillars covering the bottom of a nearby lake,” a natural phenomenon re-created on the new model’s textured green dial.

The unique moss pillars take many centuries to form underwater. When discovered by Japanese researchers, they were affectionately named “kokebozu,” a Japanese word that combines koke (moss), and bouzu (young boy). It is known today that the kokebozu is not made from one type of plant life alone, but from moss and various algae and bacteria that coexist.

The silver-framed, square-shaped date-display window is located at the 3 o’clock mark and uses Arabic numerals to represent the date. The power-reserve indicator snuggles between the 7 and 9 o’clock marker and offers functions typically found in a professional diving watch. For example, the new model’s case is water-resistant to depths of 300 meters, enough to protect the watch against saturation while diving. The watch’s green, unidirectional, rotating bezel has a diving scale resting upon a silver-cermet exterior panel. The push-button and the diver-adjusted mechanism is slightly animated, protruding from the case’s right side, and positioned under the bezel’s scale at the 20-seconds position. The case measures 44.8 mm in diameter by 15.7 mm wide, with a height of 50.9-mm. The watch’s caseback is engraved with “LIMITED EDITION” as well as the watch’s serial number (out of 500 pieces) as proof of authenticity.

The movement, Seiko’s Spring Drive Caliber 5R65, offers a power reserve of approximately 72 hours (3 days) when fully-wound and is touted by Seiko for its reliability in “sporting situations” due to its high resistance to temperature change and shocks. The high-beat movement is accurate to +1 second per-day and +15 seconds per month. The Seiko Prospex LX SNR045J1 will be a available for purchase in August, priced at 6,100 euros (the U.S. price has yet to be announced). All 500 editions are presented on a three-fold-clasp steel bracelet with a secure lock and push-button release.

Model:Seiko Prospex LX SNR045J1
Reference number:SNR045J1
Functions:Hours, minutes, seconds, +1 second per day/ +15 seconds per month
Movement:Spring Drive Caliber 5R65, +1 second per-day and +15 seconds per month, (approximately) 72-hour power reserve
Case:Silver, green unidirectional rotating bezel, water-resistant to depths of 300 meters, push-button, diver-adjusted mechanism
Bracelet and clasp:Three-fold clasp with secure lock , push button release with extender
Dimensions:Diameter = 44.8 mm
Width = 15.7 mm
Height = 50.9-mm
Price:6,100 euros

For the latest look at Seiko’s LX line and Prospect collection, click on the link here.

No Responses to “Seiko Prospex LX Goes Back to its Aquatic Roots with the Launch of the SNR045J1”

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  1. Ulrich Mellenthin

    I am very happy to get one 124/500 here in Germany!
    It seems ,that no other is aviable now.

  2. Brad Rhoton

    How much is this, The Seiko Prospect LX, in US DOLLARS? Where can I Buy it in Houston, TX?
    Brad Rhoton- Watch Collector 281-543-5546 Cell
    [email protected]

  3. Gareth Fernandes

    Seiko release another classic high quality timepiece equipped with the legendary Spring Drive Movement whilst still retaining that masculine design and feel.
    Love Seiko

  4. Bogdan Manea

    The watch is definitely state of the art. But I never, I mean never EVER will buy it at this pricepoint. It needs 500 people truly, deeply annoyed by their money. I mean 2K more and you get a Submariner.

  5. I’m pretty sure this is a mistake, ‘The case measures 44.8 mm in diameter by 15.7 mm wide, with a height of 50.9-mm.’ 50.9mm wide and 15.7 high?

  6. Gerry Dimatos

    Absolutely love the LX line…
    A must have piece from Seiko…
    From Gerry Dimatos.

  7. WOW. 44.8mm Diameter and 50.9mm Height. That is one heck of a thick watch.

  8. Michael Chang

    Power reserve is at btw 7-9 and measurements for width and height were reversed.

    • Corey Vlahos

      Hey Michael,

      Thank you for noticing and letting us know. The section has been updated!


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