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 1970 Heritage Diver's Black Series Limited Edition
SpecStudio
Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition
Click to inspect
Seiko · Prospex Sea

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Diver

$3,300Stock unknown

7 matched eBay listings

Case

Diameter
44mm
Thickness
13mm
Lug-to-lug
49.3mm
Lug width
20mm
Material
Stainless Steel
Water resistance
200m

Crystal & dial

Crystal
Sapphire
Shape
Curved
AR coating
Anti-reflective coating on inner surface
Lume
LumiBrite on hands, index(es) and bezel

Movement

Caliber
Seiko 8L35
Type
Automatic
Power reserve
50h
Jewels
26

Design language

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

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 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 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$3,300

The forum market

Follow the asking price.

Active listings0Across watch forums
Closed · 90d0Asking-price history

No forum listings tracked for this watch yet. Market+ adds the weekly trend.

Retail stock & market context

Seiko on the secondhand market

+10.5%

2026 so far · +5.8% to +16.3% · 91 matched watches

In line with the index

Divers as a group: +6.5% · 339 matched watches

Year-by-year readings →

02The connection engine

More like this.

Seiko Captain Willard

Seiko

Captain Willard

42.7mm · Automatic$1,300

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

Seiko

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

42.7mm · Automatic$1,350

Seiko Prospex Sea 1968 Heritage Diver's GMT

Seiko

Prospex Sea 1968 Heritage Diver's GMT

42mm · Automatic$1,500

Spinnaker Tesei Titanium

Spinnaker

Tesei Titanium

42mm · Automatic$625

Spinnaker Dumas Automatic

Spinnaker

Dumas Automatic

44mm · Automatic$239

Spinnaker Wreck Automatic

Spinnaker

Wreck Automatic

44mm · Automatic$189

View all alternatives

03The community take

Owners talk.

“

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

Synthesized from 4 sources
Reddit·3↗
WatchUSeek↗
Open the discussion

On real wrists

No shots yet. Show how it wears.

04The paper trail

Ask the communityStart a discussion about the Prospex Sea 1970 Heritage Diver's Black Series Limited Edition: get takes from other collectors.Ask →

05The discussion

Talk about the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition.