Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet

Reference 234.30.41.21.03.001

About this watch

The Omega Seamaster 300 Master Chronometer, reference 234.30.41.21.03.001, is a stunning example of craftsmanship and precision fused into a timepiece. Its striking blue dial, crafted from high-quality stainless steel, exudes durability and elegance. The watch seamlessly transitions between casual and formal settings, making it suitable for both everyday wear and special occasions. At the core of the Seamaster 300 lies the automatic Omega Caliber 8912, featuring a chronometer and co-axial escapement for exceptional accuracy and reliability. This movement is built to last, with 38 jewels and a 60-hour power reserve. The watch's impressive water resistance of 300 meters ensures it can withstand even the most demanding underwater adventures. The Omega Seamaster 300 Master Chronometer is not just a timepiece; it's a celebration of craftsmanship, innovation, and style. Its rich history, modern features, and breathtaking design make it an investment that any watch enthusiast would be proud to own.
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MSRP: $7,100
Market Price: $4,467

Key Features

  • Automatic Omega Caliber 8912 movement
  • 300 meters water resistance
  • 41mm stainless steel case diameter
  • 38 jewels for exceptional accuracy
  • 60-hour power reserve for reliability
  • Co-axial escapement for reduced friction and increased accuracy
  • Chronometer certification for precision and reliability

Specifications

Brand
Omega
Family
Seamaster 300
Model
Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet
Reference
234.30.41.21.03.001
Movement
8912
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
41mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Omega Seamaster 300 Heritage Blue - Full Set + Extra Straps - $5,500

Omega Seamaster 300 Heritage Blue - Full Set + Extra Straps - $5,500

This Omega Seamaster 300 Heritage Blue comes as a full set dated 2024, with two extra straps and is running as expected for a year-old watch.

  • Condition: Pre-owned with small scratches on high-polish surfaces
  • Case Size: 41mm diameter
  • Bracelet Size: ~6.5" wrist
  • Year: 2024
Posted at
Jan 19, 2026, 3:09 PM
Active
2022 Omega Heritage Seamaster 300, Blue Dial (Full Set) Warranty Through 7/7/2027

2022 Omega Heritage Seamaster 300, Blue Dial (Full Set) Warranty Through 7/7/2027

This Omega Heritage Seamaster 300 features a stunning blue sandwich dial with vintage Super-LumiNova indices and rhodium-plated hands. The watch is in excellent condition, with minor superficial signs of use on the bracelet.

  • Condition: Excellent
  • Case material: 316L Stainless Steel
  • Bezel material: Oxalic Acid Anodized Aluminium
  • Water resistance: 300m
Posted at
Mar 29, 2025, 5:55 PM
Active
Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( new / 2024 )

Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( new / 2024 )

This Omega Seamaster 300 Heritage is a brand new 41mm stainless steel watch with a blue dial, accompanied by all original boxes, papers, and warranty card.

  • Condition: Brand new
  • Case size: 41mm diameter
  • Movement: 8912 Master Co-Axial
Posted at
Mar 6, 2025, 3:44 PM
Active
Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( excellent )

Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( excellent )

Up for sale is an excellent condition Omega Seamaster 300 Heritage 41mm Blue Dial reference # 234.30.41.21.03.001 It comes complete with all boxes, papers, booklets, hang tag and Omega Warranty Card dated January 2023.

  • Condition: Excellent
  • Case size: 41mm
  • Movement: Master Co-Axial Movement
Posted at
Mar 5, 2025, 3:47 PM
Active

2022 Omega Heritage Seamaster 300, Blue Dial (Full Set)

This Omega Heritage Seamaster 300 features a stunning blue sandwich dial and a rhodium-plated movement showcased through a sapphire caseback.

  • Condition: Excellent, with minor superficial signs of use on the bracelet
  • Movement: Omega Co-Axial Master Chronometer Calibre 8912, self-winding, METAS-certified chronometer
  • Bezel material: Oxalic Acid Anodized Aluminium
  • Depth rating: 300m water resistance
Posted at
Feb 5, 2025, 6:00 PM
Active
Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( new / 2024 )

Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( new / 2024 )

A brand new Omega Seamaster 300 Heritage with a 41mm blue dial, featuring an 8912 Master Co-Axial Movement and a stainless steel case.

  • Condition: Brand new
  • Case size: 41mm diameter
  • Movement type: Master Co-Axial
Posted at
Jan 22, 2025, 3:16 PM
Active
[WTS] Omega Seamaster 300M "Seaweed" Green Wave Dial on OEM Mesh! 210.32.42.20.10.001 - SNOWMAGEDDON SPECIAL

Omega Seamaster 300M "Seaweed" Green Wave Dial on OEM Mesh! 210.32.42.20.10.001 - SNOWMAGEDDON SPECIAL

The Omega Seamaster Diver 300M 'Seaweed' features a unique green wave dial and is powered by the Caliber 8800 movement, providing up to 55 hours of power reserve. It's water-resistant up to 300 meters, making it suitable for various activities, including swimming or diving.

  • Condition: Excellent preowned condition
  • Movement: Caliber 8800
  • Depth rating: 300m
  • Power reserve: up to 55 hours
Posted at
Jan 25, 2026, 2:43 PM
Active
[WTS] Omega Seamaster 300M - "No Time To Die" - 42mm

Omega Seamaster 300M - "No Time To Die" - 42mm

This Omega Seamaster Diver 300M features a lightweight titanium case, matte black tropical aluminum dial and bezel, and vintage-inspired details throughout, powered by Co-Axial Master Chronometer Calibre 8806.

  • Condition: Very good overall
  • Case material: Titanium
  • Case size: 42mm diameter
  • Movement caliber: Co-Axial Master Chronometer Calibre 8806
Posted at
Jan 24, 2026, 12:44 PM
Active
[WTS] Omega Seamaster 300m 41mm Full Size 2531.80 - FRESHLY OVERHAULED BY OMEGA 🧼 ($1K service, many parts replaced) - Full Kit - 2 year Omega warranty - $3700 firm shipped CONUS

Omega Seamaster 300m 41mm Full Size 2531.80 - FRESHLY OVERHAULED BY OMEGA 🧼 ($1K service, many parts replaced) - Full Kit - 2 year Omega warranty - $3700 firm shipped CONUS

Omega - 2531.80 · $3,700
This Omega Seamaster 300m is a full-size watch with a 41mm case, featuring a freshly overhauled movement and various parts replaced by Omega. It comes with a 2-year warranty and is in incredible condition.

  • Condition: Pre-owned, like new with minor desk dive scuffs on clasp
  • Warranty Years: 2
  • Service Cost: $1,000
  • Bracelet Condition: All pins replaced
Posted at
Jan 23, 2026, 4:00 PM
Active