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Browse/Alternatives/Seiko Prospex Sea Save the Ocean Special Edition
Seiko Prospex Sea Save the Ocean Special Edition
Finding alternatives to

Seiko Prospex Sea Save the Ocean Special Edition

40 watches that match on case size, movement family, and price band. Sorted by how close the match is.

Case
42.4mm
Movement
Automatic
Category
Diver
MSRP
$550
The short answer

The closest alternative to the Seiko Prospex Sea Save the Ocean Special Edition is the Seiko Monster ($550) — shared caliber (4R36) and Same family (Prospex Sea). If price is the constraint, the Swatch Sistem Sea at $170 (vs $550 for the Prospex Sea Save the Ocean Special Edition) covers most of the same brief. From the independents, the Zelos Blacktip 41 is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition ($1,750) is where the same idea goes with a bigger budget.

40 matches
Microbrand picks· 12

Independent makers covering the same brief — usually with something the mainstream brands don't.

Zelos Blacktip 41
Zelosmicro

Blacktip 41

4 variantsBlacktip
41mm·Automatic·200m WR
$499MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Zelos Swordfish 3
Zelosmicro

Swordfish 3

40/42mm
28 variantsSwordfish
40/42mm·Automatic·200m WR
$399MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Boldr Odyssey 40mm
Boldrmicro

Odyssey 40mm

9 variantsSeries
40mm·Automatic·300m WR
$799MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Borealis Watch Co. Jamanta
Borealis Watch Co.micro

Jamanta

5 variantsJamanta
42.50mm·Automatic·300m WR
$415MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Zelos Hammerhead V3 300m Titanium
Zelosmicro

Hammerhead V3 300m Titanium

10 variantsHammerhead V3
44mm·Automatic·300m WR
$559MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Dryden Pathfinder
Drydenmicro

Pathfinder

9 variantsPathfinder
41mm·Automatic·201m WR
$650MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Borealis Watch Co. Caloura 300m
Borealis Watch Co.micro

Caloura 300m

4 variantsCaloura 300m
42mm·Automatic·300m WR
$275MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Islander Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195
Islandermicro
Under $50

Islander Northport Hi-Beat Automatic Dive Watch with Ocean Blue and White Ripple Dial #ISL-195

40.5mm·Automatic·200m WR
$499MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Spinnaker Hass Automatic
Spinnakermicro

Hass Automatic

10 variantsHass
43mm·Automatic·300m WR
$445MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Audaz ADZ-3050
Audazmicro

ADZ-3050

6 variantsSeries
42mm·Automatic·300m WR
$550MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Aquastar Benthos Professional
Aquastarmicro

Benthos Professional

2 variantsSeries
42mm·Automatic·300m WR
$1,590MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Spinnaker Fleuss
Spinnakermicro

Fleuss

23 variantsFleuss
43mm·Automatic·150m WR
$179MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Mainstream picks· 12

Established brands covering the same brief at a comparable price — same case size, similar movement family. Often the deciding click for a new buyer.

Seiko Monster
Seiko
Prospex Sea

Monster

42.4mm·Automatic·200m WR
$550MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Seiko Prospex Sea PADI Special Edition
Seiko

Prospex Sea PADI Special Edition

45mm·Automatic·200m WR
$650MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Seiko Prospex Sea PADI Special Edition
Seiko

Prospex Sea PADI Special Edition

41.7mm·Automatic·200m WR
$650MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Tissot Seastar 1000
Tissot

Seastar 1000

40/43mm
7 variantsSeastar 1000
40/43mm·Automatic·300m WR
$875MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Glycine Combat Sub Sport
Glycine

Combat Sub Sport

8 variantsCombat Sub Sport
42mm·Automatic·200m WR
$1,650MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Orient 75th Anniversary RA-TX0210L10B
Orient

75th Anniversary RA-TX0210L10B

42.8mm·Automatic·200m WR
$375MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Orient Diver Watch
Orient

Diver Watch

7 variantsDiver
41.5mm·Automatic·200m WR
$285MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Orient AA02 Diver Watch
Orient
DiverAA02

AA02 Diver Watch

3 variantsAA02
41.5mm·Automatic·200m WR
$285MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Christopher Ward C60 Trident Reef
Christopher Ward
Trident

C60 Trident Reef

5 variantsTrident
41mm·Automatic·200m WR
$995MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Citizen Promaster Diver Automatic
Citizen

Promaster Diver Automatic

2 variantsPromaster
44mm·Automatic·200m WR
$469MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Tissot Seastar Wilson WNBA
Tissot

Seastar Wilson WNBA

40mm·Automatic·300m WR
$875MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Yema Superman Heritage
Yema

Superman Heritage

2 variantsSuperman
39mm·Automatic·300m WR
$1,004MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Cheaper alternatives· 4

If the price is the only thing keeping you off this watch, these get you most of the way there for less.

Swatch Sistem Sea
Swatch

Sistem Sea

Ref. SUTN403
42mm·Automatic
$170MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Swatch The Swatch Sistem51 Hodinkee Summer Ed
Swatch

The Swatch Sistem51 Hodinkee Summer Ed

Ref. SUTZ407
42mm·Automatic
$170MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Swatch Am51
Swatch

Am51

Ref. SO30B400
42mm·Automatic
$170MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Orient Sport Watch
Orient

Sport Watch

3 variantsSport
41.9mm·Automatic
$245MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Pricier alternatives· 12

Where the same idea goes when budget isn't the constraint — luxury upgrades and step-ups.

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition
Seiko

Prospex Sea 1968 Heritage Diver's GMT Watch Limited Edition

42mm·Automatic·300m WR
$1,750MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition
Seiko

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

42mm·Automatic·300m WR
$1,750MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
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·200m WR
$1,350MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Omega

Seamaster Diver 300M Co Axial Master Chronometer 42mm

25 variantsSeamaster Diver 300M
42mm·Automatic·300m WR
$6,300MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
DOXA SUB 300
DOXA

SUB 300

8 variantsSUB 300
42.5mm·Automatic·300m WR
$2,890MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Citizen Promaster Fujitsubo
Citizen
Promaster DiverPromaster

Promaster Fujitsubo

Ref. NB6026
41mm·Automatic·200m WR
$1,195MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Breitling Superocean Automatic
Breitling

Superocean Automatic

36/42/44/46mm
19 variantsSuperocean
36/42/44/46mm·Automatic·300m WR
$5,700MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Glycine Combat Sub Vintage
Glycine

Combat Sub Vintage

2 variantsCombat Sub Vintage
42mm·Automatic·200m WR
$1,750MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Hamilton Khaki Navy Scuba Auto
Hamilton

Khaki Navy Scuba Auto

40/43mm
4 variantsKhaki Navy Scuba Auto
40/43mm·Automatic·100m WR
$975MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
Glycine Combat Sub Box Ceramic
Glycine

Combat Sub Box Ceramic

3 variantsCombat Sub Box Ceramic
41mm·Automatic·200m WR
$1,800MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
DOXA SUB 200 II
DOXA

SUB 200 II

5 variantsSUB 200 II
44mm·Automatic·200m WR
$1,750MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
DOXA SUB 200 C-GRAPH II
DOXA

SUB 200 C-GRAPH II

6 variantsSUB 200 C-GRAPH II
42mm·Automatic·200m WR
$2,890MSRP
—Used
vsCompare with the Seiko Prospex Sea Save the Ocean Special Edition
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