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 Blue 41mm 234.30.41.21.03.001 – Excellent Condition – Full Set – 2023

Omega Seamaster 300 Blue 41mm 234.30.41.21.03.001 – Excellent Condition – Full Set – 2023

This is a modern Omega Seamaster 300 with a blue sandwich dial and matching ceramic bezel, powered by the Master Co-Axial Caliber 8912.

  • Condition: Excellent
  • Case size: 41mm diameter
  • Movement: Master Co-Axial Caliber 8912
Posted at
Apr 17, 2026, 10:24 PM
Active
[WTS] Omega Seamaster 300 Blue 41mm 234.30.41.21.03.001 – Excellent Condition – Full Set – 2023

Omega Seamaster 300 Blue 41mm 234.30.41.21.03.001 – Excellent Condition – Full Set – 2023

A modern Omega Seamaster 300 in blue, presented with a stunning blue sandwich dial and matching blue ceramic bezel.

  • Condition: Excellent
  • Case size: 41mm
  • Movement: Master Co-Axial Caliber 8912
Posted at
Apr 13, 2026, 9:32 PM
Active
[WTS] Omega Seamaster 300 Heritage - Mint Condition + 2 new straps

Omega Seamaster 300 Heritage - Mint Condition + 2 new straps

The Omega Seamaster 300 Heritage reference 234.30.41.21.03.001 is a modern reissue of Omega's classic dive watch with a beautiful blue sandwich dial and vintage-inspired design. It blends vintage aesthetics with Omega's modern Master Chronometer movement and METAS certification, making it one of the most compelling heritage divers on the market. The watch comes as a full set, still under Omega factory warranty.

  • Condition: Near Mint
  • Case diameter: 41mm
  • Movement type: Omega Master Chronometer automatic movement (Calibre 8912)
  • Certification: METAS certified Master Chronometer
Posted at
Apr 7, 2026, 12:18 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 300, Ref. 233.30.41.21.01.001, $3,700

Omega Seamaster 300, Ref. 233.30.41.21.01.001, $3,700

This Omega Seamaster 300 Heritage is one of Omega's most iconic dive watches, featuring a Co-Axial Master Chronometer Cal. 8400 and anti-magnetic properties up to 15,000 gauss.

  • Condition: Excellent pre-owned condition
  • Movement: Omega Cal. 8400 (Automatic, Co-Axial Master Chronometer)
  • Case size: 41mm
  • Water resistance: None mentioned
Posted at
Apr 18, 2026, 3:48 PM
Active