

Prospex Seiko Watchmaking 110th Anniversary Save the Ocean Limited Edition GMT. To mark 110 years of watchmaking excellence, Seiko is highlighting its continuous dedication to evolving technology, as well as diversity, equality and the sustainable manufacturing necessary to meet environmental challenges. Based on Seiko’s iconic 1968 diver’s watch, this landmark automatic GMT watch, available only in a controlled-production run of 4,000, with the serial number engraved on each caseback, also extends the Prospex tradition of celebrating its rich legacy of innovation in high-intensity timekeeping by re-creating and re-interpreting signature achievements. This extraordinary Limited Edition features Seiko’s first mechanical GMT movement in a diver’s watch, caliber 6R54. Providing a power reserve of approximately 72 hours, the longest of any Seiko mechanical watch, this 24-jewel automatic GMT movement beats at a frequency of 21,600 vibrations per hour and offers manual winding capability. The blue GMT hand can be set independently in one-hour increments, without interrupting the time-of-day hands, to provide a second time zone reading at a glance. Expressing the power of nature, the three-dimensional pressed pattern ice-blue dial suggests the majesty of polar glaciers, the extreme world in which Seiko diver’s watches proved their excellence, now imperiled by climate change. Framed by a Made-in-Japan blue-gray ceramic uni-directional rotating elapsed timing bezel with knurled edge for enhanced operability, the dial also features LumiBrite hands and markers, and a date calendar. Created for scuba diving to depths of 200 meters, this exceptional timepiece is crafted of stainless steel with durable super-hard coating, screwdown crown and caseback, anti-reflective sapphire crystal, three-link slim profile bracelet, and a tri-fold push-button release clasp with secure lock and extender. This environmentally conscious design emphasizes Seiko’s commitment to conservation by offering an additional fabric strap made of 100% recycled plastic bottles, woven with the traditional Japanese Seichu braiding technique in a gradated gray suggesting glacial ice. As part of Seiko’s “Save the Ocean” campaign, a portion of the proceeds from sales of this extraordinary Limited Edition will be contributed to marine conservation. Packaged in a Limited Edition collectors’ box.
Automatic GMT
6R54
Stainless steel case with super-hard coating
42 mm
48.6 mm
200 meters (660 feet), follows ISO standards and is suitable for scuba diving
12.9 mm
42
Blue
- Prospex Seiko Watchmaking 110th Anniversary Save the Ocean Limited Edition GMT
- To mark 110 years of watchmaking excellence, Seiko is highlighting its continuous dedication to evolving technology, as well as diversity, equality and the sustainable manufacturing necessary to meet environmental challenges
- A portion of the proceeds supports marine conservation as part of the Seiko “Save the Ocean” campaign
- Limited Edition of 4,000
- Production serial number engraved on caseback
- Prospex Automatic Diver
- Automatic GMT with manual winding capability
- Blue-gray ceramic uni-directional rotating elapsed timing bezel
- Ice-blue dial with three-dimensional pressed pattern evoking glaciers
- Date calendar
- Blue GMT hand
- LumiBrite hands and markers
- Screwdown crown and caseback
- Tri-fold push button release clasp with secure lock and extender
- Packaged in a Limited Edition collectors’ box
SPB385
Prospex
Sapphire crystal with anti-reflective coating on the inner surface
Why Choose Us
What Our Clients Say About Us
First off, I want to say that I absolutely love my new Seiko SPB503J1 “Alpinist”, which I purchased from Hislon Jewelry. At 34, it was finally time to buy my first “big boy” watch, and after extensive research, I landed on this absolute beauty. I contacted multiple authorized Seiko dealers in the area, and Hislon Jewelry was the only one that not only had several Alpinists in stock but was also willing to accommodate my late schedule. From the moment my wife and I walked into their showroom, I knew I made the right choice. Their display featured an impressive collection of Seiko, King Seiko, Michele, Tissot, and Rolex watches—clearly a store that takes pride in quality and selection. We were helped by Paige, who was both kind and extremely knowledgeable. However, what truly set Hislon Jewelry apart was the customer service that followed after the sale. I’ll admit—I can be a bit neurotic when it comes to expensive purchases. After leaving the store wearing my watch, I started to worry that the clasp might not be fully secure (this may very well have been in my head). My wife suggested we stop by the next morning to have it looked at. Once again, Paige assisted us, and whether my concern was valid or not, she handled everything with complete grace and professionalism. She offered to swap the watch for another one and readjusted it so it fit perfectly. She never made me feel rushed, dismissed, or uncomfortable. Instead, she made me feel heard and taken care of—and that speaks volumes about the level of professionalism at Hislon Jewelry. I am 100% satisfied with both my purchase and the service I received. I would highly recommend Hislon Jewelry for all your watch and jewelry needs, and I will absolutely be back when it’s time to add the next piece to my collection.
A huge 5 ⭐️⭐️⭐️⭐️⭐️review @ Hislon Jewelers. Working with Paige Ibrahim and Jeff I can’t say enough about my experience I decided to trade in some gold and gems that I have accumulated thru the years and past generations Gold was at an all time high and I decided to trade in and reinvent the jewels I had inherited One piece which was spectacular will always be close to my heart A little of my dad’s and mom. We created a spectacular piece I’m so grateful
I can’t say enough good things about this jewelry store! The staff are honest, reliable, and truly care about their customers. They take the time to explain everything and make sure you’re completely comfortable with your purchase. It’s such a relief to find a jeweler I can trust — I won’t go anywhere else now!
I‘ve always shopped at big box jewelry stores and this week I came across this nice gem of a place -no pun intended- Hislon Jewelry. The first thing that caught my attention was the selection of watches, but I was on a mission to buy a chain. Jeff greeted me and showed me the different chain styles and gave me a lot of information on the price of gold. I felt very comfortable and the quality of the fine jewelry was excellent. I definitely enjoyed my shopping experience and I won’t be going to a big box store anymore!
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