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

Reference 210.30.42.20.03.001

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of watchmaking, boasting a robust 42mm stainless steel case, blue ceramic bezel with rotating 0-60 scale, and stunning blue dial with wave pattern. Protected by sapphire crystal, this timepiece showcases the intricate Omega caliber 8800 movement, featuring Co-Axial escapement and Master Chronometer certification for exceptional accuracy and resilience against magnetic fields up to 15,000 gauss.
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MSRP: $5,900
Market Price: $3,806

Key Features

  • 42mm stainless steel case
  • Blue ceramic bezel with rotating 0-60 scale
  • Stunning blue dial with wave pattern
  • Sapphire crystal protection
  • Omega caliber 8800 movement
  • Co-Axial escapement
  • Master Chronometer certification
  • Water resistance up to 300 meters

Specifications

Brand
Omega
Family
Seamaster Diver 300m
Model
Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Blue / Bracelet
Reference
210.30.42.20.03.001
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
42mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

Omega Seamaster Professional 300m Diver Blue Dial/Bezel

Omega Seamaster Professional 300m Diver Blue Dial/Bezel

Omega - 210.30.42.20.03.001 · $4,650
This Omega Seamaster Professional is a 42mm diver's watch with a blue ceramic dial and bezel, featuring an automatic movement with a 55-hour power reserve.

  • Condition: Excellent
  • Case size: 42mm diameter
  • Thickness: 14mm
  • Lug width: 20mm
Posted at
Apr 6, 2025, 8:49 AM
Active
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Omega Seamaster 300M - Blue Dial - 210.30.42.20.03.001 (excellent / complete)

Omega Seamaster 300M - Blue Dial - 210.30.42.20.03.001 (excellent / complete)

Omega - 210.30.42.20.03.001 · $4,150
This Omega Seamaster 300M features a 42mm stainless steel case with a blue dial and bezel, powered by the Master Co-Axial Movement.

  • Condition: Excellent / Complete Set
  • Case size: 42mm diameter
  • Movement type: Master Co-Axial
Posted at
Mar 25, 2025, 3:13 PM
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Omega Seamaster 300M - Blue Dial - 210.30.42.20.03.001 ( excellent / 2024 )

Omega Seamaster 300M - Blue Dial - 210.30.42.20.03.001 ( excellent / 2024 )

Omega - 210.30.42.20.03.001 · $4,150
This Omega Seamaster 300 is a Master Chronometer with a 42mm stainless steel case, featuring a blue dial and bezel on a bracelet.

  • Condition: Excellent
  • Movement: 8800 Master Co-Axial Movement
  • Case size: 42mm diameter
  • Shipping options: Fedex Express within the US, International Shipping adds $150
Posted at
Feb 6, 2025, 3:27 PM
Active
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Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (2022 LIKE NEW COMPLETE)

Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (2022 LIKE NEW COMPLETE)

Omega - 210.30.42.20.03.001 · $3,850
A 42MM Omega Seamaster 300M Blue with all functions working properly and included accessories.

  • Condition: Like new, worn less than a handful of times
  • Box And Papers: Complete box and papers, dated May 2022
  • Included Accessories: Outer sleeve, outer box, inner box, instruction manual, serialized hangtag, dust bag
Posted at
Jan 29, 2025, 4:58 PM
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[WTS] Omega Seamaster Diver 300M 007 NTTD

Omega Seamaster Diver 300M 007 NTTD

Omega - 210.90.42.20.01.001 · $8,750
Selling my Omega Seamaster NTTD edition ref. 210.90.42.20.01.001, a full kit with the Omega/007 branded canvas and leather watch roll, hang tag, all cards and boxes.

  • Condition: Excellent with minor scratches
  • Water Resistance: 300m
  • Case Dimensions: 42mm diameter
Posted at
Feb 5, 2026, 9:53 AM
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[WTS] Omega Seamaster Diver 300m Bronze Gold on Titanium 2024 Complete Set

Omega Seamaster Diver 300m Bronze Gold on Titanium 2024 Complete Set

Omega - 210.90.42.20.10.001 · $9,800
A modern execution of Omega’s iconic professional dive watch, the Seamaster Diver 300M reflects the brand’s focus on technical performance and refined design. Housed in a 42mm grade 2 titanium case with 9K Bronze Gold, this reference features a distinctive green dial with matching bezel, delivering a contemporary yet unmistakable Seamaster aesthetic built for both daily wear and serious dive capability.

  • Condition: Excellent Condition with little to no signs of wear at all
  • Case material: grade 2 titanium
  • Case size: 42mm diameter
  • Water resistance: 300m depth rating
Posted at
Feb 4, 2026, 2:53 PM
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[WTS] Omega Seamaster Diver 300m 2025 Unworn- Complete Set

Omega Seamaster Diver 300m 2025 Unworn- Complete Set

Omega - 210.30.42.20.01.018 · $6,500
The Omega Seamaster Diver 300M is a modern execution of the iconic professional dive watch, featuring a refreshed design with a 42mm stainless steel case and black dial.

  • Condition: Unworn
  • Movement: Omega Co-Axial Master Chronometer automatic movement
  • Water resistance: 300 meters
  • Case size: 42mm
Posted at
Feb 4, 2026, 2:42 PM
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[WTS] 🌊 Omega Seamaster Diver 300M Blue🌊

🌊 Omega Seamaster Diver 300M Blue🌊

Additional Details:

Posted at
Feb 3, 2026, 9:46 PM
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[WTS] Omega Seamaster Diver 300M 42mm 210.32.42.20.03.001 Full Set Mint

Omega Seamaster Diver 300M 42mm 210.32.42.20.03.001 Full Set Mint

Omega - 210.32.42.20.03.001 · $4,500
A modern, high-performance dive watch with iconic Seamaster styling featuring a blue wave dial and ceramic bezel.

  • Condition: Mint
  • Case size: 42mm
  • Dial color: blue
  • Bezel material: ceramic
Posted at
Feb 3, 2026, 12:58 PM
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View listing on r/WatchExchange