Omega Seamaster Diver 300m Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet

Reference 210.20.42.20.03.002

Omega Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is an exceptional watch that successfully merges style, functionality, and durability. Its stunning blue dial with Sedna gold accents is reminiscent of the deep ocean, while its robust stainless steel case and ceramic bezel provide a durable and scratch-resistant exterior. At the heart of this luxury timepiece lies the Omega caliber 8800, a self-winding movement featuring a Co-Axial escapement that increases accuracy and reduces friction. With a power reserve of 55 hours, Master Chronometer certification, and resistance to magnetic fields up to 15,000 gauss, this watch is both precise and reliable. The Seamaster Diver 300M boasts an impressive water resistance of 300m, making it perfect for diving or everyday wear. Whether you're an avid diver or simply appreciate fine craftsmanship, this watch is sure to impress with its versatility, style, and luxury appeal.
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MSRP: $12,700
Market Price: $7,610

Key Features

  • 42mm Stainless Steel Case
  • Sapphire Crystal Glass
  • 300m Water Resistance
  • Master Chronometer Certification
  • Omega Caliber 8800 Movement
  • Co-Axial Escapement
  • 55-Hour Power Reserve

Specifications

Brand
Omega
Family
Seamaster Diver 300m
Model
Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet
Reference
210.20.42.20.03.002
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
42mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS][US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

[US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

Omega - 210.20.42.20.03.002 · $7,025
Omega Seamaster SMP300 in blue dial and Sedna gold, 42mm diameter, functions perfectly mechanically.

  • Condition: Fantastic condition with minor hairlines on clasp, case, and bracelet
  • Case Diameter: 42mm
  • Clasp Condition: minor hairlines
  • Strap Status: fully linked
Posted at
Apr 19, 2026, 6:40 AM
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[WTS][US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

[US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

Omega - 210.20.42.20.03.002 · $7,050
This Omega Seamaster SMP300 features a blue dial and Sedna gold case, measuring 42mm in diameter.

  • Condition: Excellent with minor hairlines on clasp, case, and bracelet
  • Case size: 42mm diameter
Posted at
Apr 12, 2026, 9:42 AM
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[WTS] Omega Seamaster Diver 300M 210.30.42.20.04.001 – Full Set

Omega Seamaster Diver 300M 210.30.42.20.04.001 – Full Set

Omega - 210.30.42.20.04.001 · $4,650
This Omega Seamaster Diver 300M features a steel case, black ceramic bezel with white enamel diving scale, and a polished white ceramic laser-engraved wave dial. It has a Caliber 8800 Master Chronometer movement, helium escape valve, and 300m water resistance.

  • Condition: Good, with light wear from normal use
  • Case size: 42mm diameter
  • Water resistance: 300m depth rating
  • Movement: Caliber 8800 Master Chronometer
Posted at
Apr 22, 2026, 11:32 AM
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[WTS] 🏒🥅🚨 2026 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Unworn, Brushed Grey Wave Dial, Titanium Bezel, Grey Rubber Strap — Ref. 210.32.42.20.06.002

🏒🥅🚨 2026 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Unworn, Brushed Grey Wave Dial, Titanium Bezel, Grey Rubber Strap — Ref. 210.32.42.20.06.002

Omega - 210.32.42.20.06.002 · $6,250
A stealthy, technical take on the classic Diver 300M line with a brushed grey dial and titanium bezel, featuring Master Chronometer performance and 300m water resistance.

  • Condition: Unworn
  • Case size: 42mm
  • Water resistance: 300m
  • Bezel material: Grade 5 titanium
Posted at
Apr 21, 2026, 10:42 PM
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[WTS] Omega Seamaster Diver 300M Titanium Bronze Gold Green Dial | Ref. 210.90.42.20.10.001 | Full Set | $9,850

Omega Seamaster Diver 300M Titanium Bronze Gold Green Dial | Ref. 210.90.42.20.10.001 | Full Set | $9,850

Omega - 210.90.42.20.10.001 · $9,850
The Omega Seamaster Diver 300M in Grade 2 Titanium and exclusive OMEGA Bronze Gold is a visually striking configuration with a unique combination of a deep sandblasted green dial against warm Bronze Gold accents. This watch is exceptionally lightweight and delivers a rich, warm-toned aesthetic. It comes with an extra rubber strap for a sportier, lighter wear option.

  • Condition: Pre-owned, excellent condition, minimal wear, green dial and bezel pristine
  • Case Size: 42mm diameter
  • Bracelet Type: Original titanium brushed Milanese mesh bracelet
  • Water Resistance: 300m / 984ft
Posted at
Apr 21, 2026, 10:37 PM
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[WTS] 🏒🥅🚨 2026 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Unworn, White Wave Dial, Ceramic Bezel — Full Set — Ref. 210.30.42.20.04.001

🏒🥅🚨 2026 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Unworn, White Wave Dial, Ceramic Bezel — Full Set — Ref. 210.30.42.20.04.001

Omega - 210.30.42.20.04.001 · $6,150
The 2026 Omega Seamaster Diver 300M in white dial configuration delivers the modern Bond-era Seamaster design with a fresh, high-contrast look that wears brilliantly in any light. The 42 mm stainless steel case and laser-engraved white wave dial create a sharp, contemporary diver aesthetic.

  • Condition: Unworn
  • Case size: 42 mm
  • Movement: Master Chronometer movement
  • Bezel material: Ceramic
Posted at
Apr 21, 2026, 10:33 PM
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[WTS] Omega Seamaster Diver 300M “No Time To Die” 007 Edition Titanium | Ref. 210.90.42.20.01.001 | Full Set | $8500

Omega Seamaster Diver 300M “No Time To Die” 007 Edition Titanium | Ref. 210.90.42.20.01.001 | Full Set | $8500

Omega - 210.90.42.20.01.001 · $8,500
The Omega Seamaster Diver 300M 'No Time To Die' James Bond edition features a titanium case and brown/khaki dial with a unique 'Broad Arrow' detail.

  • Condition: Pre-owned, worn lightly with minimal signs of wear on bracelet
  • Case size: 42mm
  • Bracelet material: Grade 2 Titanium
  • Dial color: Brown/khaki
Posted at
Apr 21, 2026, 10:31 PM
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[WTS] 🏒🥅🚨 2025 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Matte Black No-Date Dial, Orange Accents, Steel Mesh Bracelet — Full Set — Ref. 210.30.42.20.01.018

🏒🥅🚨 2025 Omega Seamaster Diver 300M Co-Axial Master Chronometer — Matte Black No-Date Dial, Orange Accents, Steel Mesh Bracelet — Full Set — Ref. 210.30.42.20.01.018

Omega - 210.30.42.20.01.018 · $6,650
The 2025 Omega Seamaster Diver 300M takes the classic 300M formula and gives it a stealthy, modern twist with a matte black no-date dial, crisp orange accents, and a brushed steel mesh bracelet.

  • Condition: Very good condition
  • Case size: 42mm
  • Water resistance: 300m
  • Movement certification: METAS-certified Master Chronometer performance
Posted at
Apr 21, 2026, 10:25 PM
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[WTS] 2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

Omega - 210.30.42.20.10.001 · $5,395
Up for sale is a Omega Seamaster Diver 300m Green Seaweed, a watch from the 2024 collection.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2024
  • Case Size: 42mm
  • Water Resistance: 300m
Posted at
Apr 21, 2026, 12:03 PM
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