lug2lug
BrowseCompareNewsCommunityMy Watches
BrowseCompareNewsCommunityMy Watches
Theme
Popular microbrands:Christopher Ward·Baltic·anOrdain·Atelier Wen·Boldr·Bremont·Dan Henry·DOXABrowse all →
Best, by the specs:Diver under $2,000·Dress under $5,000·Chronograph under $5,000·Best sport watches·GMT under $5,000·Field under $500·Pilot under $2,000·Casual under $1,000All rankings →
Glossary:Lug-to-Lug·Water Resistance·Chronograph·GMT·Automatic·LumeBrowse all →
Tools:Collection tracker·Wrist-fit calculator·Selling calculator·What should I buy?·Market index·iPhone app
Lug2Letter
Watches worth knowing about, weekly.
Curated discoveries, founder spotlights, and the occasional deep-dive.
Get the app
Download on theApp StoreGET IT ONGoogle Play
TermsPrivacyDelete accountCopyrightDisclosuresContactContribute

Independent reference site · not affiliated with any brand · contains affiliate links

© 2026 Lug2Lug LLC · Prices are estimates and not offers

Loading watch
Home/Browse/Seiko/Prospex Sea Save the Ocean Special Edition
SpecStudio
Seiko Prospex Sea Save the Ocean Special Edition
Click to inspect
Seiko · Prospex Sea

Seiko Prospex Sea Save the Ocean Special Edition

Diver

$550Stock unknown

23 matched eBay listings

Case

Diameter
42.4mm
Thickness
13.4mm
Lug-to-lug
49.4mm
Lug width
20mm
Material
Stainless Steel
Water resistance
200m

Crystal & dial

Crystal
Hardlex
Lume
LumiBrite on hands, index(es) and bezel

Movement

Caliber
Seiko 4R36
Type
Automatic
Power reserve
41h
Jewels
24

Seiko

Seiko's day-date automatic caliber and the in-house branded version of the NH36 with stricter quality control and finishing. The additional day wheel over the 4R35 adds the day-of-week complication without changing the movement dimensions. Found extensively in the Seiko 5 Sports and Prospex lines, it offers Seiko's proven reliability with the convenience of day-date display at a mainstream price point.

Design language

Case shape
round
Dial style
textured
Bezel
rotating
Bracelet
lug-attached
Hands
dauphine

AI-detected from the product image

Prospex Sea collection · 33 watches

62MAS
62MAS40.5mm
Captain Willard
Captain Willard42.7mm
Ice Diver
Ice Diver45mm
King Turtle
King Turtle45mm
Monster
Monster42.4mm
Prospex Sea
Prospex Sea42mm
Prospex Sea
Prospex Sea41mm
Prospex Sea
Prospex Sea43.5mm
Prospex Sea
Prospex Sea41.3mm
Prospex Sea
Prospex Sea43.8mm
Prospex Sea
Prospex Sea41.7mm
Prospex Sea
Prospex Sea34mm
20 more in this collection
Prospex Sea 1965 Heritage Diver's Save the Ocean Special EditionProspex Sea 1965 Heritage Diver's WatchProspex Sea 1965 Heritage Diver's Watch PADI Special EditionProspex Sea 1968 Heritage Diver's GMTProspex Sea 1968 Heritage Diver's GMT WatchProspex Sea 1968 Heritage Diver's GMT Watch Limited EditionProspex Sea 1970 Heritage Diver's Black Series Limited EditionProspex Sea 1970 Heritage Diver's Save the Ocean Special EditionProspex Sea JAWS 50th Anniversary Limited EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea PADI Special EditionProspex Sea Save the Ocean Special EditionProspex Sea Save the Ocean Special EditionProspex Sea Seiko Diver’s Watch 60th Anniversary Limited EditionProspex Sea Seiko Diver’s Watch 60th Anniversary Limited EditionProspex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited EditionProspex Sea The Black SeriesSumo
Alternatives

01The market

Market prices.

Retail$550

The forum market

See what sellers are asking.

Active listings0Across watch forums
Closed · 90d3Asking-price history

See the asking prices behind closed forum listings. Market+ adds the weekly trend.

Retail stock & market context

Seiko on the secondhand market

+10.5%

2026 so far · +5.9% to +16.1% · 91 matched watches

In line with the index

Divers as a group: +6.5% · 340 matched watches

Year-by-year readings →

02The connection engine

More like this.

Seiko Monster

Seiko

Monster

42.4mm · Automatic$550

Seiko Prospex Sea PADI Special Edition

Seiko

Prospex Sea PADI Special Edition

45mm · Automatic$650

Boldr Odyssey 40mm

Boldr

Odyssey 40mm

40mm · Automatic$799

Zelos Blacktip 41

Zelos

Blacktip 41

41mm · Automatic$499

Zelos Swordfish 3

Zelos

Swordfish 3

40mm · Automatic$399

Borealis Watch Co. Caloura 300m

Borealis Watch Co.

Caloura 300m

42mm · Automatic$275

View all alternatives

03The community take

Owners talk.

“

The Seiko Prospex Sea Save the Ocean Special Edition is widely praised for its visually striking and unique dial designs, often described as a standout feature offering significant aesthetic appeal for the price. Owners and reviewers consistently highlight the attractive blue gradients, wave patterns, and textured finishes that evoke ocean depths. The watch is generally considered comfortable to wear, with a well-proportioned case size and good build quality. Accuracy is reported as around +5 seconds per day by one owner. However, several sources point to the bracelet and clasp as a weak point, with criticisms including pin-and-collar construction, stamped clasps, and a lack of a convenient diver's extension. Some reviewers also note potential issues with bezel alignment and day/date wheel alignment. On balance, owners and reviewers rate the Seiko Prospex Sea Save the Ocean Special Edition highly for its exceptional dial design and overall value.

Synthesized from 10 sources
WatchUSeek·3↗
Reddit·2↗
A Blog to Watch·2↗
Fratello·2↗
Hodinkee↗
Open the discussion

On real wrists · 1

04The paper trail

Ask the communityStart a discussion about the Prospex Sea Save the Ocean Special Edition: get takes from other collectors.Ask →

05The discussion

Talk about the Seiko Prospex Sea Save the Ocean Special Edition.