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Browse/Alternatives/Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Finding alternatives to

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm

Ref. 210.22.42.20.01.001

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

Case
42mm
Movement
Automatic
Category
Diver
MSRP
$9,600
The short answer

The closest alternative to the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm is the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm ($16,600) — shared caliber (Omega 8800) and Same family (Seamaster Diver 300M). If price is the constraint, the Bremont S302 at $3,900 (vs $9,600 for the Seamaster Diver 300M Co Axial Master Chronometer 42mm) covers most of the same brief. From the independents, the Ventus Watches Northstar is the standout microbrand take — pro diver and Looks nearly identical. Stepping up, the Breitling Superocean Automatic ($25,400) is where the same idea goes with a bigger budget.

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

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

Ventus Watches Northstar
Ventus Watchesmicro

Northstar

8 variantsSeries
40mm·Automatic·300m WR
$349MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Ventus Watches Mori 300m Diver M-6 Gunmetal Steel
Ventus Watchesmicro

Mori 300m Diver M-6 Gunmetal Steel

41mm·Automatic·300m WR
$349MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Ventus Watches Mori
Ventus Watchesmicro

Mori

14 variantsSeries
41mm·Automatic·300m WR
$349MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Melbourne Watch Company Sorrento
Melbourne Watch Companymicro

Sorrento

3 variantsSeries
42mm·Automatic·200m WR
$844MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Akrone C-02 KLUB
Akronemicro

C-02 KLUB

41mm·Automatic·200m WR
$583MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Audaz ADZ-3070
Audazmicro

ADZ-3070

5 variantsSeries
42mm·Automatic·200m WR
$700MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Monro Adventure Watches Moa
Monro Adventure Watchesmicro
Ocean

Moa

7 variantsSeries
41mm·Automatic·200m WR
$423MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
La Touraine Seafarer
La Tourainemicro

Seafarer

10 variantsSeries
43mm·Automatic·200m WR
$500MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Ergon Watches Maelstrom
Ergon Watchesmicro

Maelstrom

3 variantsSeries
40mm·Automatic·300m WR
$380MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
MKII Project 300
MKIImicro

Project 300

4 variantsSeries
41.25mm·Automatic·300m WR
$1,995MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Akrone C-02 Tactik Graphite
Akronemicro

C-02 Tactik Graphite

41mm·Automatic·300m WR
$624MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Circula Watches AquaSport GMT
Circula Watchesmicro

AquaSport GMT

2 variantsSeries
40mm·Automatic·200m WR
$1,490MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
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.

Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Omega

Seamaster Diver 300M Co Axial Master Chronometer 42mm

8 variantsSeamaster Diver 300M
42mm·Automatic·300m WR
$16,600MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
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 Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Superocean Automatic
Breitling

Superocean Automatic

36/42mm
3 variantsSuperocean
36/42mm·Automatic·300m WR
$7,800MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Superocean Heritage B20 Automatic
Breitling

Superocean Heritage B20 Automatic

42/44mm
3 variantsSuperocean Heritage
42/44mm·Automatic·200m WR
$7,250MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Superocean Heritage B31 Automatic
Breitling

Superocean Heritage B31 Automatic

42/44mm
2 variantsSuperocean Heritage
42/44mm·Automatic·200m WR
$8,050MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont S502
Bremont
Supermarine

S502

3 variantsSupermarine
43mm·Automatic·500m WR
$5,100MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm
Omega

Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm

4 variantsSeamaster Diver 300M
44mm·Automatic·300m WR
$14,000MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Black Bay GMT S&G
Tudor

Black Bay GMT S&G

Ref. m79833mn-0003
41mm·Automatic·200m WR
$5,825MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Black Bay Bronze
Tudor

Black Bay Bronze

Ref. m79250ba-0001
43mm·Automatic·200m WR
$5,425MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont Supermarine 300M
Bremont

Supermarine 300M

8 variantsSupermarine
40mm·Automatic·300m WR
$3,550MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Submariner Date
Rolex

Submariner Date

Ref. 126610LN
41mm·Automatic·300m WR
$11,350MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Pelagos LHD
Tudor

Pelagos LHD

Ref. m25610tnl-0001
40mm·Automatic·500m WR
$6,025MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Cheaper alternatives· 12

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

Bremont S302
Bremont
Supermarine

S302

6 variantsSupermarine
40mm·Automatic·300m WR
$3,900MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont Supermarine 500M
Bremont

Supermarine 500M

7 variantsSupermarine
43mm·Automatic·500m WR
$4,700MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
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 Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont S300
Bremont
Supermarine

S300

7 variantsSupermarine
40mm·Automatic·300m WR
$3,795MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch
Seiko

Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

42.6mm·Automatic·300m WR
$3,600MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Avenger Automatic
Breitling

Avenger Automatic

42/43mm
6 variantsAvenger
42/43mm·Automatic·300m WR
$4,900MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Seiko Captain Willard
Seiko
Prospex Sea

Captain Willard

2 variantsProspex Sea
42.7mm·Automatic·200m WR
$1,300MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Norqain Adventure Sport 42mm Golden Hour Limited Edition
Norqain

Adventure Sport 42mm Golden Hour Limited Edition

42mm·Automatic·100m WR
$4,170MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Marathon OSAR-D (Original SAR with Date) Automatic 41mm
Marathon

OSAR-D (Original SAR with Date) Automatic 41mm

41mm·Automatic·300m WR
$1,800MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tissot Seastar 1000
Tissot

Seastar 1000

40/43mm
7 variantsSeastar 1000
40/43mm·Automatic·300m WR
$875MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
DOXA SUB 200 II
DOXA

SUB 200 II

5 variantsSUB 200 II
44mm·Automatic·200m WR
$1,750MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Glycine Combat Sub
Glycine

Combat Sub

5 variantsCombat Sub
42mm·Automatic·200m WR
$1,850MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Pricier alternatives· 12

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

Breitling Superocean Automatic
Breitling

Superocean Automatic

Ref. R17375211B1S1
42mm·Automatic·300m WR
$25,400MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Yacht-Master
Rolex

Yacht-Master

37/40/42mm
2 variantsYacht-Master
37/40/42mm·Automatic·100m WR
$32,500MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Superocean Heritage B20 Automatic
Breitling

Superocean Heritage B20 Automatic

Ref. RB2010121B1S1
42mm·Automatic·200m WR
$22,650MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Submariner Date
Rolex

Submariner Date

2 variantsSubmariner
41mm·Automatic·300m WR
$50,900MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Super Chronomat B01 44
Breitling
Chronomat

Super Chronomat B01 44

5 variantsChronomat
44mm·Automatic·200m WR
$13,250MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Black Bay
Tudor

Black Bay

Ref. m79230g-0001
41mm·Automatic·200m WR
—MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex GMT-Master II
Rolex

GMT-Master II

3 variantsGMT-Master II
40mm·Automatic·100m WR
$50,800MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Fifty Fathoms Automatique
Blancpain

Fifty Fathoms Automatique

2 variantsFifty Fathoms
42.3mm·Automatic·300m WR
$40,400MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Audemars Piguet Royal Oak Offshore Diver 42mm
Audemars Piguet

Royal Oak Offshore Diver 42mm

Ref. 15720CN.OO.A002CA.01
42mm·Automatic·300m WR
—MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Fifty Fathoms Automatique
Blancpain

Fifty Fathoms Automatique

2 variantsFifty Fathoms
42.3mm·Automatic·300m WR
$40,400MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Omega Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm
Omega

Seamaster Diver 300M Co Axial Master Chronometer Chronograph 44mm

2 variantsSeamaster Diver 300M
44mm·Automatic·300m WR
$27,300MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Fifty Fathoms Automatique
Blancpain

Fifty Fathoms Automatique

Ref. 5010-3630-NABA
42.3mm·Automatic·300m WR
$40,400MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Homages & lookalikes· 1

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.

San Martin San Martin Watchdives X 38mm Chronometer Automatic SN0113W V
San Martinhomage

San Martin Watchdives X 38mm Chronometer Automatic SN0113W V

5 variantsSeries
38mm·Automatic·100m WR
$238MSRP
—Used
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
← Back to the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mmBest Diver Watches Under $5,000 →Open the alternatives engine