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

Reference 234.30.41.21.03.001

Omega Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet

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 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )

Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )

Omega - 210.30.42.20.01.018 · $6,450
This Omega Seamaster 300 is a brand new, Master Chronometer-certified watch featuring a 42mm stainless steel case and orange accents on a mesh bracelet.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: 8806 Master Co-Axial
Posted at
Apr 8, 2026, 12:18 PM
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[WTS] Omega Seamaster 300M Black / Orange Diver 210.32.42.20.01.006 ( new / 2025 / box and papers )

Omega Seamaster 300M Black / Orange Diver 210.32.42.20.01.006 ( new / 2025 / box and papers )

Omega - 210.32.42.20.01.006 · $6,250
This Omega Seamaster 300M Black / Orange Diver features a 42mm stainless steel case with an orange rubber strap and a black & orange dial. It comes complete with all boxes, papers, and booklet.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: 8806 Master Co-Axial
Posted at
Apr 8, 2026, 12:14 PM
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[WTS] Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )

Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )

Omega - 210.30.42.20.01.001 · $5,450
This Omega Seamaster 300 is a brand new 42mm stainless steel watch with a black dial and bezel on a bracelet, complete with all original boxes, papers, and warranty.

  • Condition: Brand new
  • Case size: 42mm diameter
  • Movement: 8800 Master Co-Axial
Posted at
Apr 8, 2026, 12:10 PM
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[WTS] BNIB Omega Seamaster 300 ONLY $10k!

BNIB Omega Seamaster 300 ONLY $10k!

Omega - 210.60.42.20.99.001 · $10,000
A Brand new Omega Seamaster 300 is being listed for sale.

  • Condition: Brand new, full set
  • Rrp: $17.2k plus tax
Posted at
Apr 7, 2026, 4:32 PM
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[WTS] Omega Seamaster 300 Master Co-axial Blue Dial Box&papers Ref 233.62.41.21.03.00

Omega Seamaster 300 Master Co-axial Blue Dial Box&papers Ref 233.62.41.21.03.00

Omega - 233.62.41.21.03.00 · $5,950
This Omega Seamaster 300 Master Co-axial features a blue dial, an 18kt sedna gold bezel, and has been upgraded with an OEM black leather strap.

  • Condition: Very good
  • Bezel material: 18kt sedna gold
  • Strap: OEM black leather
Posted at
Apr 7, 2026, 11:27 AM
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[WTS] Omega Seamaster 300 Master Co-Axial Titanium Blue Dial 233.90.41.21.03.001 Full Kit $4,650

Omega Seamaster 300 Master Co-Axial Titanium Blue Dial 233.90.41.21.03.001 Full Kit $4,650

Omega - 233.90.41.21.03.001 · $4,650
Up for sale is an Omega Seamaster 300 Master Co-Axial in titanium with a blue sandwich dial, featuring an automatic movement and a 300m water resistance.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 41mm
  • Movement: Omega Master Co-Axial Caliber 8400 automatic movement
  • Water resistance: 300m
Posted at
Apr 6, 2026, 10:07 PM
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[WTS] Omega Seamaster 300M 210.30.42 Blue Dial 42mm - $3,450

Omega Seamaster 300M 210.30.42 Blue Dial 42mm - $3,450

Omega - 210.30.42 · $3,450
Up for sale is my Omega Seamaster Blue dial 210.30.42, measuring at 42mm with an automatic Calibre Omega 8800 movement.

  • Condition: great condition, 8.9/10 exterior
  • Movement: automatic Calibre Omega 8800
  • Case size: 42mm diameter
  • Case material: steel
Posted at
Apr 6, 2026, 9:45 PM
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[WTS] Omega Seamaster 300m Professional Black Ceramic 210.30.42.20.01.001

Omega Seamaster 300m Professional Black Ceramic 210.30.42.20.01.001

Omega - 210.30.42.20.01.001 · $4,150
This Omega Seamaster 300m Professional features a black ceramic case, comes with both OEM bracelet and rubber strap, and is accompanied by box and papers.

  • Condition: Pre-owned with minor scratches
  • Case Material: black ceramic
  • Bracelet: OEM
  • Strap: rubber
Posted at
Apr 6, 2026, 8:12 PM
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[WTS] Omega Seamaster 300M Co-Axial 41mm 2220.80 Box and Card - $2,950

Omega Seamaster 300M Co-Axial 41mm 2220.80 Box and Card - $2,950

Omega - 2220.80 · $2,950
Up for sale is my Omega Seamaster 2220.80, a 41mm watch with an automatic co-axial cal 2500 movement.

  • Condition: 8.9/10, great condition with minimal marks/hairlines on the case, caseback, and bracelet
  • Movement: automatic co-axial cal 2500
  • Bracelet size range: 7-7.25 inch, depending on wrist shape
Posted at
Apr 5, 2026, 10:13 PM
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