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 300 210.30.44.51.03.001 COMPLETE SET 2021

Omega Seamaster 300 210.30.44.51.03.001 COMPLETE SET 2021

A 2021 Omega Seamaster 300 reference 210.30.44.51.03.001 in excellent condition, with a 44mm diameter.

  • Condition: Excellent
  • Diameter: 44mm
  • Year of manufacture: 2021
Posted at
Mar 13, 2026, 2:09 PM
Active
[WTS] Omega Seamaster 300M Green Seaweed (210.30.42.20.10.001) Complete Set

Omega Seamaster 300M Green Seaweed (210.30.42.20.10.001) Complete Set

This Omega Seamaster 300M Green Seaweed is a complete set, including box, hang tag, and triple cards.

  • Condition: Great condition, minor hairlines on clasp and bracelet, tiny ding on case at 8 o'clock and bezel at 2 o'clock
  • Box condition: outer is damaged
  • Bracelet condition: minor hairlines
Posted at
Mar 12, 2026, 7:11 PM
Active
[WTS] Omega Seamaster 300m Black Ceramic/Gold 210.62.44.20.01.001

Omega Seamaster 300m Black Ceramic/Gold 210.62.44.20.01.001

The Omega Seamaster Diver 300M features a fully ceramic case, lightweight and virtually scratch-proof, with blacked-out matte finish and 18K Sedna Gold accents.

  • Case diameter: 43.5mm
  • Thickness: 14.5mm
  • Lug width: 21mm
Posted at
Mar 12, 2026, 4:23 PM
Active
[WTS] Omega Seamaster 300M - 2220.80 – James Bond Casino Royale 41mm

Omega Seamaster 300M - 2220.80 – James Bond Casino Royale 41mm

Omega - 2220.80 · $2,750
This Omega Seamaster 300M is a stunning piece, described as being in good condition with a crisp blue wave dial and clean bracelet and case.

  • Condition: Good condition overall
  • Case size: 41mm
  • Bracelet size range: 7 - 7.25 inch
Posted at
Mar 12, 2026, 1:55 PM
Active
[WTS] Omega Seamaster 300 Master Co-Axial 41 mm in Sedna gold

Omega Seamaster 300 Master Co-Axial 41 mm in Sedna gold

The Omega Seamaster 300 Master Co-Axial features a sand-blasted black dial with 18K Sedna gold hands and a ceramic bezel ring with a Ceragold diving scale, set in a 41 mm stainless steel case on a brown leather strap.

  • Case material: 41 mm stainless steel
  • Band: brown leather strap
  • Dial color: sand-blasted black
Posted at
Mar 12, 2026, 1:31 PM
Active
[WTS] Omega Seamaster 300 Heritage - 41mm - Black Dial - 233.30.41.21.01.001 - Full Set

Omega Seamaster 300 Heritage - 41mm - Black Dial - 233.30.41.21.01.001 - Full Set

Up for sale is an Omega Seamaster 300 Heritage in 41mm case size, featuring a black dial.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 41mm
Posted at
Mar 12, 2026, 5:09 AM
Active
[WTS] Omega Seamaster 300m James Bond 41mm Automatic 2531.80

Omega Seamaster 300m James Bond 41mm Automatic 2531.80

  • Material: stainless steel
  • Size: 41mm diameter
Posted at
Mar 11, 2026, 7:54 PM
Active
[WTS] Omega Seamaster 300m Black Ceramic/Gold 210.62.44.20.01.001

Omega Seamaster 300m Black Ceramic/Gold 210.62.44.20.01.001

This Omega Seamaster Diver 300M is a modern, worry-free daily driver with a fully ceramic case that's lightweight and virtually scratch-proof. The black finish makes it stealthy, but the 18K Sedna Gold accents give it warmth and luxury.

Posted at
Mar 10, 2026, 2:23 PM
Active
[WTS] OMEGA Seamaster 300M 2561.80

OMEGA Seamaster 300M 2561.80

OMEGA - 300M 2561.80 · $1,500
This Omega Seamaster 300M features a midsize design and quartz movement, with a bracelet circumference of approximately 17.5cm.

  • Condition: Excellent (9/10)
  • Bracelet circumference: approximately 17.5cm
  • Shipping: EU shipping preferred
Posted at
Mar 8, 2026, 1:06 PM
Active