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Browse/Alternatives/Seiko 5KX
Seiko 5KX
Finding alternatives to

Seiko 5KX

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

Case
42.5mm
Movement
Automatic
Category
Diver
MSRP
$350
The short answer

The closest alternative to the Seiko 5KX is the Seiko 5 Sports SKX series DENHAM Limited Edition, Seiko Boutique exclusive model ($430) — shared caliber (Seiko 4R36) and Same family (5 Sports SKX series). If price is the constraint, the Swatch Sistem Sea at $170 (vs $350 for the 5KX) covers most of the same brief. From the independents, the Borealis Watch Co. Caloura 300m is the standout microbrand take — common cross-shop and Pro diver. Stepping up, the Tissot Seastar 1000 ($875) is where the same idea goes with a bigger budget.

ColourwayPick a colourway to match a specific dial
46 matches
Microbrand picks· 12

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

Borealis Watch Co. Caloura 300m
Borealis Watch Co.micro

Caloura 300m

4 variantsCaloura 300m
42mm·Automatic·300m WR
$275MSRP
—Used
vsCompare with the Seiko 5KX
Spinnaker Croft Pioneer
Spinnakermicro

Croft Pioneer

8 variantsCroft
42mm·Automatic·100m WR
$199MSRP
—Used
vsCompare with the Seiko 5KX
Spinnaker Bradner Pearl Diver
Spinnakermicro

Bradner Pearl Diver

3 variantsBradner
42mm·Automatic·180m WR
$370MSRP
—Used
vsCompare with the Seiko 5KX
Zelos Great White 43
Zelosmicro

Great White 43

3 variantsGreat White
43mm·Automatic·300m WR
$599MSRP
—Used
vsCompare with the Seiko 5KX
Duxot Atlantica Diver Automatic
Duxotmicro

Atlantica Diver Automatic

12 variantsAtlantica Diver
42mm·Automatic·200m WR
$159MSRP
—Used
vsCompare with the Seiko 5KX
Audaz Audaz Sea Ranger ADZ-2050
Audazmicro
Sea Ranger

Audaz Sea Ranger ADZ-2050

3 variantsSeries
42mm·Automatic·200m WR
$375MSRP
—Used
vsCompare with the Seiko 5KX
HELM Khuraburi
HELMmicro

Khuraburi

4 variantsKhuraburi
42mm·Automatic·300m WR
$310MSRP
—Used
vsCompare with the Seiko 5KX
Baltic Aquascaphe Titanium
Balticmicro

Aquascaphe Titanium

2 variantsAquascaphe Titanium
41mm·Automatic·300m WR
$788MSRP
—Used
vsCompare with the Seiko 5KX
Henry Archer Nordlys
Henry Archermicro

Nordlys

13 variantsNordlys
42mm·Automatic·200m WR
$3,299MSRP
—Used
vsCompare with the Seiko 5KX
Islander Islander Red October V2 Dive Watch with Radiant Blue Dial #ISL-323
Islandermicro
Under $50

Islander Red October V2 Dive Watch with Radiant Blue Dial #ISL-323

42mm·Automatic·200m WR
$449MSRP
—Used
vsCompare with the Seiko 5KX
Formex Reef 42 mm
Formexmicro

Reef 42 mm

6 variantsReef 42 mm
42mm·Automatic·300m WR
$2,414MSRP
—Used
vsCompare with the Seiko 5KX
Duckworth Prestex Belmont 300 Automatic
Duckworth Prestexmicro

Belmont 300 Automatic

3 variantsSeries
42mm·Automatic·300m WR
$750MSRP
—Used
vsCompare with the Seiko 5KX
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 5 Sports SKX series DENHAM Limited Edition, Seiko Boutique exclusive model
Seiko

5 Sports SKX series DENHAM Limited Edition, Seiko Boutique exclusive model

42.5mm·Automatic·100m WR
$430MSRP
—Used
vsCompare with the Seiko 5KX
Seiko 5 Sports SKX series MOONEYES Limited Edition
Seiko

5 Sports SKX series MOONEYES Limited Edition

42.5mm·Automatic·100m WR
$420MSRP
—Used
vsCompare with the Seiko 5KX
Seiko 5 Sports SKX series 2024 Special Edition
Seiko

5 Sports SKX series 2024 Special Edition

2 variants5 Sports SKX series
42.5mm·Automatic·100m WR
$375MSRP
—Used
vsCompare with the Seiko 5KX
Orient Kamasu
Orient

Kamasu

4 variantsKamasu
41.8mm·Automatic·200m WR
$375MSRP
—Used
vsCompare with the Seiko 5KX
Orient AA02 Diver Watch
Orient
DiverAA02

AA02 Diver Watch

3 variantsAA02
41.5mm·Automatic·200m WR
$285MSRP
—Used
vsCompare with the Seiko 5KX
Orient Diver Watch
Orient

Diver Watch

7 variantsDiver
41.5mm·Automatic·200m WR
$285MSRP
—Used
vsCompare with the Seiko 5KX
Citizen Tsuyosa Shore
Citizen

Tsuyosa Shore

2 variantsTsuyosa
40mm·Automatic·100m WR
$495MSRP
—Used
vsCompare with the Seiko 5KX
Citizen Promaster Diver Automatic
Citizen

Promaster Diver Automatic

2 variantsPromaster
44mm·Automatic·200m WR
$469MSRP
—Used
vsCompare with the Seiko 5KX
Damasko DSub50
Damaskomicro

DSub50

5 variantsSeries
43mm·Automatic·300m WR
—MSRP
—Used
vsCompare with the Seiko 5KX
Yema Pearldiver
Yema

Pearldiver

38mm·Automatic·100m WR
$491MSRP
—Used
vsCompare with the Seiko 5KX
Damasko DSub10 black
Damaskomicro

DSub10 black

4 variantsSeries
42mm·Automatic·300m WR
—MSRP
—Used
vsCompare with the Seiko 5KX
Damasko DSub10
Damaskomicro

DSub10

8 variantsSeries
43mm·Automatic·300m WR
—MSRP
—Used
vsCompare with the Seiko 5KX
Cheaper alternatives· 3

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 5KX
Swatch The Swatch Sistem51 Hodinkee Summer Ed
Swatch

The Swatch Sistem51 Hodinkee Summer Ed

Ref. SUTZ407
42mm·Automatic
$170MSRP
—Used
vsCompare with the Seiko 5KX
Swatch Swatch Sistem51 Hodinkee Generation
Swatch

Swatch Sistem51 Hodinkee Generation

Ref. SUTZ408
42mm·Automatic
$170MSRP
—Used
vsCompare with the Seiko 5KX
Pricier alternatives· 12

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

Tissot Seastar 1000
Tissot

Seastar 1000

40/43mm
7 variantsSeastar 1000
40/43mm·Automatic·300m WR
$875MSRP
—Used
vsCompare with the Seiko 5KX
Hamilton Khaki Navy Frogman Auto
Hamilton

Khaki Navy Frogman Auto

41/42/46mm
3 variantsKhaki Navy Frogman Auto
41/42/46mm·Automatic·300m WR
$1,395MSRP
—Used
vsCompare with the Seiko 5KX
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 5KX
Glycine Combat Sub Sport
Glycine

Combat Sub Sport

8 variantsCombat Sub Sport
42mm·Automatic·200m WR
$1,650MSRP
—Used
vsCompare with the Seiko 5KX
Tudor Black Bay 68
Tudor

Black Bay 68

Ref. m7943a1a0nu-0001
43mm·Automatic·200m WR
$5,475MSRP
—Used
vsCompare with the Seiko 5KX
Tissot Seastar 2000
Tissot

Seastar 2000

46mm·Automatic·600m WR
$1,275MSRP
—Used
vsCompare with the Seiko 5KX
Glycine Combat Sub
Glycine

Combat Sub

5 variantsCombat Sub
42mm·Automatic·200m WR
$1,850MSRP
—Used
vsCompare with the Seiko 5KX
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 5KX
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 5KX
Yema Superman Dato CMM.10
Yema

Superman Dato CMM.10

4 variantsSuperman
39.5mm·Automatic·300m WR
$1,777MSRP
—Used
vsCompare with the Seiko 5KX
Omega Seamaster Planet Ocean 600M Co Axial Master Chronometer 42mm
Omega

Seamaster Planet Ocean 600M Co Axial Master Chronometer 42mm

7 variantsSeamaster Planet Ocean 600M
42mm·Automatic·600m WR
$8,600MSRP
—Used
vsCompare with the Seiko 5KX
Norqain Adventure Sport JP 42mm Midnight Blue
Norqain

Adventure Sport JP 42mm Midnight Blue

42mm·Automatic·100m WR
$3,471MSRP
—Used
vsCompare with the Seiko 5KX
Homages & lookalikes· 7

Watches that share this design language — confirmed homages, close tributes, and lookalikes, including the classics that inspired the look. Hidden when nothing in the catalog is related.

Detrash Watches Poison Ivy
Detrash Watchesmicro
Dive Watches

Poison Ivy

41mm·Automatic·200m WR
$507MSRP
—Used
vsCompare with the Seiko 5KX
Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311
Islandermicro
Under $50

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

40mm·Automatic·200m WR
$399MSRP
—Used
vsCompare with the Seiko 5KX
Sangin Instruments Professional
Sangin Instrumentsmicro

Professional

4 variantsSeries
43.5mm·Quartz·300m WR
$679MSRP
—Used
vsCompare with the Seiko 5KX
Vertigo Watches Viator GMT
Vertigo Watchesmicro

Viator GMT

4 variantsSeries
39mm·Automatic·300m WR
$557MSRP
—Used
vsCompare with the Seiko 5KX
Islander Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63
Islandermicro
Under $50

Islander 38mm Automatic Dive Watch with Radiant Blue Dial #ISL-63

38mm·Automatic·200m WR
$429MSRP
—Used
vsCompare with the Seiko 5KX
Islander Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50
Islandermicro
Under $50

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50

43mm·Automatic·200m WR
$399MSRP
—Used
vsCompare with the Seiko 5KX
Pagani Design PD-1695
Pagani Designhomage
Automatic

PD-1695

3 variantsPD-1695
45mm·Automatic·300m WR
$145MSRP
—Used
vsCompare with the Seiko 5KX
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