Seiko Prospex LX 500 Piece Limited Edition SNR045 Green Dial 45mm Spring Drive


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Something I’ve always noticed is the build quality on Seiko watches. The SNR045 did not disappoint on that front. Of course, you can set apart a Grand Seiko diver from an entry-level one. But, in general, you can safely say that what you get is definitely worth the money. Even some of my dive watches around the €500 mark have impressed me. But this diver is on another level for sure.

Prospex SNR045

This watch is part of the Seiko LX Line which consists of watches designed with sport in mind. It’s short for LUX. According to Seiko, the name hints at the Latin word for light. That’s something that can be found in reflections on the various flat surfaces of the case. And the case is certainly one of the things that makes this watch look so impressive. The combination of different surface finishes — alternately polished and brushed — gives this Seiko Prospex SNR045 a lot of contrast. It is probably one of many reasons these watches leave such a positive impression on me.

Yes, I am slightly biased as my taste in watches is rather straightforward. This makes it both easy and difficult at the same time. Due to my profession, the design of a watch and its looks are definitely one of the first things I notice. But that’s something I think should be the main reason for anyone to buy (or skip) a watch in the first place if you ask me. 


Most watches from the Prospex collection tick a lot of boxes in my book and so does this version. And that’s despite the 44.8mm diameter and 15.7mm thickness. I’m aware that I often repeat that 40mm is about the perfect size for a watch, but I say it often for a reason — I believe it to be (mostly) true. And although every single millimeter of deviation generally makes it harder for me to like a watch, there are exceptions to that personal rule. And this diver is definitely one of them.

Ken Okuyama Design

Seiko’s LX line has been designed in collaboration with legendary designer Ken Okuyama. He has an impressive track record of iconic cars and other high-profile products. His aim was to combine simplicity, harmony, power, and presence. For this model, inspiration was found in Antarctic Exploration. That is reflected in the texture of the dial and the green color scheme used for this watch.

And this inspiration is what sets this watch apart from many others. Seiko doesn’t only bring you many colorful dials, the brand is also uncommonly comfortable playing with various textures to make them stand out. For this Prospex SNR045 inspiration comes from Kokebozu which are moss pillars at the bottom of a lake in Skarvsnes Foreland. Although these kinds of links don’t really matter to me personally, the well-executed dial does. 

Technical Specifications

The design of the case dates back on Seiko’s historic 1968 diver. This watch shares the 300-meter water resistance with its forerunning inspiration. Unlike its vintage predecessor, this watch comes with a ceramic bezel in green which matches the dial. This green color resembles the “breath of life cultivated over a long period in the Antarctic ground”. Although it is marketing spin at its best, there is no denying that this green is stunning. Succinctly, who cares about the “why” when the “what” is so cool.

Behind that case back the Seiko Spring Drive Calibre 5R65 resides. This brilliant movement has a precision of plus-minus 1 second a day on average. That translates to an expected maximum deviation of 15 seconds a month with a power reserve of up to 72 hours or three days. Those are impressive specs for an impressive watch. The bracelet has an easy to change micro-adjustment clasp for those moments where you need a bit more or less space for your wrist.

Final thought

As mentioned in all honesty I am slightly biased when it comes to Seiko dive watches and this one is no different. Even the price tag of just over €6,000 on this Seiko Prospex SNR045 doesn’t push me away from liking it. Seiko did a great job on this limited edition in my book. This is another stunner from the Japanese giant.


Here is a Gorgeous Seiko! Only 500 Pieces made and this is #330/500! This Beauty was part of a large customer collection and rarely, if ever, worn! Definitely a fine timepiece that is equal to a Grand Seiko on every level!!


BRAND: Seiko

MODEL: Prospex Spring Drive LX Limited Edition #330/500

MOVEMENT: Spring Drive – Cal 5R65

CASE: Brushed & Polished Stainless Steel

CROWN: Screw-Down Crown

SIZE: 44.8mm

LUGS: 22mm

DIAL: Absolutely Gorgeous Green Dial

BEZEL: Green Ceramic Rotating Diver

CONDITION: Pre-owned – As-New! 

BOXES/PAPERS: Yes/Yes: Limited Edition Seiko box, polishing cloth, & manual, etc! – comes with everything as shown in pictures!


STRAP/BRACELET: – Original Seiko Brushed & Polished Stainless Steel Bracelet with all links!


Let us know what you have in your collection!! I consider all watches in trade! Please upload pictures and include details of your trades through my Trade/Buy tab at the top of my homepage.