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Alternatives to Omega Seamaster Planet Ocean 600M 43.5 mm, steel on leather strap with rubber lining, with the reasons they match.

A price comparison is unavailable for this reference. Matches use the known specifications. Case size, strap, dial color and watch type guide the order when known. One reference per brand appears before repeat brands.

Breitling Superocean Heritage B31 Automatic 44

44 mm · Automatic

44 mm case · Both on rubber straps · Black dials

Ref. AB3112241B1S1

Brand price$6,500 USD

Longines HYDROCONQUEST

43 mm · Automatic

43 mm case · Both on rubber straps · Black dials

Ref. L3.782.4.56.9

Brand price$2,000 USD

Christopher Ward C60 Trident Reef Galaxea Black

44 mm · Sellita SW200-1

44 mm case · Both on rubber straps · Black dials

Ref. C60-44A3H31S0KK0-RK

Brand price$995 USD

Hamilton Khaki Navy Scuba Auto

43mm · Automatic

43 mm case · Both on rubber straps · Black dials

Ref. H82515330

Brand price$1,225 USD

Audemars Piguet Royal Oak Concept

43 mm · Carbon

43 mm case · Both on rubber straps · Black dials

Ref. 26650FA.OO.D002CA.01

Price on request

Mido Ocean Star GMT

44 mm · Automatic

44 mm case · Both on rubber straps · Black dials

Ref. M026.629.37.291.00

Brand price$1,730 USD

Blancpain Fifty Fathoms Automatique

42.30mm · Red gold

42.3 mm case · Both on rubber straps · Black dials

Ref. 5010-3630-B64A

Brand price$40,400 USD

Tissot Seastar 2000 44mm

44.0 mm · Automatic

44 mm case · Both on rubber straps · Dive watches

Ref. T1209071728100

Brand price$1,050 USD

Rado Captain Cook High-Tech Ceramic Skeleton

43.0 mm · Automatic

43 mm case · Both on rubber straps · Dive watches

Ref. R32153209

Brand price$5,000 USD

IWC Aquatimer Chronograph Edition “Expedition Charles Darwin”

44 mm · Automatic

44 mm case · Both on rubber straps · Dive watches

Ref. IW379503

3.3% higher than in Jun 2026+$400 · Jun 18, 2026 – Oct 23, 2026

Brand price$12,400 USD

Oris Aquis Date

43.5 mm · Automatic

43.5 mm case · Black dials · Dive watches

Ref. 01-733-7730-4134-07-8-24-05PEB

Brand price$2,600 USD

Tudor Black Bay Ceramic

41 mm · Automatic

41 mm case · Both on rubber straps · Black dials

Ref. m79210cnu-0001

Brand price$6,125 USD

Glashütte Original SeaQ Panorama Date

43.20 mm · Automatic

43.2 mm case · Black dials · Dive watches

Ref. 1-36-13-01-80-33

Price on request

Ulysse Nardin Diver NET Azure

Ø 44 mm · Steel / Nylon

44 mm case · Black dials · Dive watches

Ref. 1183-170-2B/3A

Brand price$16,200 USD

TAG Heuer Carrera Chronograph Extreme Sport Twin-Time

44 mm · Automatic

44 mm case · Black dials · GMT watches

Ref. CBU2084.FT6297

Brand price$9,500 USD

Zenith DEFY EXTREME DIVER

43 mm · Automatic

43 mm case · Black dials · Dive watches

Ref. 97.9600.3620/21.I300

Brand price$13,300 USD

Rolex Sky-Dweller

42 mm · Automatic

42 mm case · Both on rubber straps · GMT watches

Ref. m336239-0002

Brand price$53,450 USD

Bell & Ross BR 03-92 Diver Black Steel

42 mm · Automatic

42 mm case · Black dials · Dive watches

Ref. BR0392-D-BL-ST/SRB-M

Brand price$4,200 USD

A. Lange & Söhne LANGE 1 TIME ZONE in 750 white gold

41.9 mm · 18-carat white gold

41.9 mm case · Black dials · GMT watches

Ref. 136.029

Price on request

Panerai Submersible Luna Rossa

44 mm · Automatic

44 mm case · Dive watches

Ref. PAM01543

Brand price$17,800 USD

Roger Dubuis Excalibur Spider Pirelli MT Black DLC Titanium 45mm

45mm · Black DLC titanium case with titanium container and rubber inlays Black DLC titanium bezel with sapphire crystal and anti-reflective coating, interchangeable with QRS - Quick Release System Black DLC titanium open case back with sapphire crystal and metallized Pirelli logo Rubber crown with black DLC titanium cover, interchangeable with QRS - Quick Release System

45 mm case · Both on rubber straps · Black dials

Ref. RDDBEX1012

Price on request