




PROSPEX SEIKO WATCHMAKING 110TH ANNIVERSARY SAVE THE OCEAN LIMITED EDITION SPB385
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. Following ISO standards for scuba diving to depths of up to 200 meters, this exceptional timepiece is crafted of stainless steel with durable super-hard coating, screwdown crown and caseback, anti-reflective sapphire crystal, new 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. 200m Water Resistant
Model: SPB385
Collection: PROSPEX
Sub Collection: 1968 Heritage Diver's Watch
Dial Color: Light Blue
Strap Material: Stainless Steel
Strap Detail: Stainless steel bracelet with super-hard coating. Additional strap made from 100% recycled plastic.
Lug Width (mm): 20
Movement: Automatic GMT
Caliber: 6R54
Movement Detail:
Caliber 6R54
21,600 vibrations per hour
24 jewels
Power reserve: approximately 72 hours
Case Material: Stainless steel case with super-hard coating
Case Diameter (mm): 42
Case Thickness (mm): 12.9
Case Length (mm): 48.6
Crystal Type: Sapphire crystal with anti-reflective coating on the inner surface
Limited Edition: Yes 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
Technical Data
Caliber 6R54
21,600 vibrations per hour
24 jewels
Power reserve: approximately 72 hours
Features
* Products will ship in 3 to 5 business days
Return and Exchange Policy
Thank you for shopping with Diamonds of London. We strive to provide high-quality watches, Jewelry and excellent customer service. If you are not completely satisfied with your purchase, we are happy to assist with returns under the following conditions:
Return Eligibility:
- Items must be returned within 14 days of the delivery date.
- The item must be unused, unworn, and in its original packaging with all tags, manuals, and accessories included.
- Items that show signs of wear, damage, or have been resized, engraved, or altered in any way are not eligible for return.
- Special orders, Items that show signs of wear, damage, or have been resized, customized, or altered in any way are not eligible for return.
- Clearance, final sale (item with a discount/sale), or custom-made items cannot be returned.
Restocking Fee:
- All returns are subject to a 20% restocking fee, which will be deducted from your refund.
Return Process:
- Contact our customer support team at sales@diamondsoflondon.com with your order number and reason for return.
- Securely package the watch and ship it back using a trackable shipping service. The customer is responsible for return shipping costs.
- Once received and inspected, a refund will be issued to your original payment method, minus the 20% restocking fee. Please allow 10-12 business days for the refund to process.
Exchanges:
- We do not offer direct exchanges. If you wish to exchange an item, please return the original product (subject to the restocking fee) and place a new order.
Damaged or Defective Items:
- If you receive a damaged or defective watch, contact us within 48 hours of delivery with photos and a description of the issue. We will provide a replacement or full refund at no additional cost.
For further assistance, please reach out to our customer service team at sales@diamondsoflondon.com or call us at 210-524-7224.
We appreciate your business and thank you for choosing Diamonds of London!
Choose options





PROSPEX SEIKO WATCHMAKING 110TH ANNIVERSARY SAVE THE OCEAN LIMITED EDITION SPB385
Sale price$1,700.00
Regular price