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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

Alternatives to the 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 variants
40mm·Automatic·300m WR
$349MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Certina DS Action Diver 43mm Powermatic 80
Certinamicro

DS Action Diver 43mm Powermatic 80

3 variants
38/40.5/43mm·Automatic·300m WR
$1,045MSRP
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
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Ventus Watches Mori
Ventus Watchesmicro

Mori

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

Sorrento

3 variants
42mm·Automatic·200m WR
$844MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Certina DS Action Diver 40.5mm Powermatic 80
Certinamicro

DS Action Diver 40.5mm Powermatic 80

3 variants
38/40.5/43mm·Automatic·300m WR
$1,032MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Monro Adventure Watches Moa
Monro Adventure Watchesmicro
Ocean

Moa

7 variants
41mm·Automatic·200m WR
$423MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Certina DS Action GMT Powermatic 80
Certinamicro

DS Action GMT Powermatic 80

2 variants
41mm·Automatic·200m WR
$1,286MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Ergon Watches Maelstrom
Ergon Watchesmicro

Maelstrom

3 variants
40mm·Automatic·300m WR
$380MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Seagull Ocean Series Pro 300m Waterproof Diving Watch 44mm
Seagullmicro
Dive Watch

Ocean Series Pro 300m Waterproof Diving Watch 44mm

4 variants
44mm·Automatic·300m WR
$499MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Squale Master
Squalemicro

Master

3 variants
42mm·Automatic·1200m WR
$2,785MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Squale 1521
Squalemicro

1521

13 variants
42mm·Automatic·500m WR
$1,265MSRP
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 variants · Seamaster Diver 300M
42mm·Automatic·300m WR
$16,600MSRP
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 variants · Seamaster Diver 300M
42mm·Automatic·300m WR
$6,300MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Superocean Automatic
Breitling

Superocean Automatic

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

Superocean Heritage B20 Automatic

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

Superocean Heritage B31 Automatic

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

S502

3 variants · Supermarine
43mm·Automatic·500m WR
$5,100MSRP
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 variants · Seamaster Diver 300M
44mm·Automatic·300m WR
$14,000MSRP
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
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont Supermarine 300M
Bremont

Supermarine 300M

8 variants · Supermarine
40mm·Automatic·300m WR
$3,550MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Fortis Marinemaster M-44
Fortis

Marinemaster M-44

5 variants · Marinemaster
44mm·Automatic·300m WR
$5,120MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Sea-Dweller
Rolex

Sea-Dweller

Ref. 126600
43mm·Automatic·1220m WR
$14,550MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Jaeger-LeCoultre Polaris Date Stainless Steel
Jaeger-LeCoultre

Polaris Date Stainless Steel

4 variants · Polaris
42mm·Automatic·200m WR
$11,100MSRP
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 variants · Supermarine
40mm·Automatic·300m WR
$3,900MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont Supermarine 500M
Bremont

Supermarine 500M

7 variants · Supermarine
43mm·Automatic·500m WR
$4,700MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Black Bay 58 79030
Tudor

Black Bay 58 79030

2 variants
39mm·Automatic·200m WR
$4,000MSRP
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
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Glycine Men's Combat Sub Sport Bronze 42mm Automatic Watch GL0322
Glycine
Combat

Men's Combat Sub Sport Bronze 42mm Automatic Watch GL0322

 
42mm·Automatic·200m WR
$585MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Bremont S300
Bremont
Supermarine

S300

7 variants · Supermarine
40mm·Automatic·300m WR
$3,795MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Invicta Pro Diver 23678
Invictamicro

Pro Diver 23678

 
40mm·Automatic·200m WR
—MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Glycine Men's Combat Sub Box Ceramic 41mm Automatic Watch
Glycine
Combat

Men's Combat Sub Box Ceramic 41mm Automatic Watch

5 variants
41mm·Automatic·200m WR
$705MSRP
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
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Glycine Men's Combat Sub 42mm Automatic Watch GL0186
Glycine

Men's Combat Sub 42mm Automatic Watch GL0186

 
42mm·Automatic·200m WR
$1,530MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Avenger Automatic
Breitling

Avenger Automatic

6 variants · Avenger
42/43mm·Automatic·300m WR
$4,900MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Movado SE Diver
Movadomicro

SE Diver

2 variants · Ref. 0607819
43mm·Automatic·200m WR
$2,495MSRP
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
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
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Submariner Date
Rolex

Submariner Date

2 variants · Submariner
41mm·Automatic·300m WR
$50,900MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Yacht-Master
Rolex

Yacht-Master

2 variants · Ref. 268655
37/40/42mm·Automatic·100m WR
$32,500MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Pelagos LHD
Tudor

Pelagos LHD

 
42mm·Automatic·500m WR
—MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Bay 58
Tudor
Black Bay 58

Bay 58

2 variants
39mm·Automatic·200m WR
—MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Tudor Black Bay Ceramic
Tudor

Black Bay Ceramic

 
41mm·Automatic·200m WR
—MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Breitling Super Chronomat B01 44
Breitling
Chronomat

Super Chronomat B01 44

5 variants · Chronomat
44mm·Automatic·200m WR
$13,250MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Rolex Sea-Dweller
Rolex

Sea-Dweller

Ref. 126603
43mm·Automatic·1220m WR
$22,450MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Fifty Fathoms Automatique
Blancpain

Fifty Fathoms Automatique

3 variants · Fifty Fathoms
42.3mm·Automatic·300m WR
$40,400MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Fifty Fathoms Automatique
Blancpain

Fifty Fathoms Automatique

3 variants · Fifty Fathoms
42.3mm·Automatic·300m WR
$40,400MSRP
vsCompare with the Omega Seamaster Diver 300M Co Axial Master Chronometer 42mm
Blancpain Bathyscaphe Chronographe Flyback
Blancpain
Fifty Fathoms

Bathyscaphe Chronographe Flyback

3 variants · Fifty Fathoms
43mm·Automatic·300m WR
$41,800MSRP
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 variants
38mm·Automatic·100m WR
$238MSRP
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 $500 →Open the alternatives engine