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

Reference 234.30.41.21.01.001

About this watch

The Omega Seamaster 300 Master Chronometer is a luxurious timepiece that embodies the spirit of adventure while delivering peak performance. Its stunning black dial, mixed indexes, and arrow-shaped hands create a sophisticated look that's perfect for formal or casual settings. The sapphire crystal glass provides excellent clarity, and the open case back showcases Omega's craftsmanship. This watch is built to withstand diving conditions with its robust stainless steel bracelet and 300-meter water resistance. At its core beats the Omega caliber 8912, an automatic movement featuring a Co-Axial escapement that minimizes friction, enhancing precision and reliability. The Seamaster 300 Master Chronometer is a certified chronometer that promises reliability, making it a worthy companion for years to come.
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MSRP: $7,100
Market Price: $4,115

Key Features

  • 41mm Round Case
  • Stainless Steel Bracelet with 21mm Lug Width
  • Sapphire Crystal Glass
  • Omega Caliber 8912 Automatic Movement
  • Co-Axial Escapement and METAS Certification
  • 300-Meter Water Resistance

Specifications

Brand
Omega
Family
Seamaster 300
Model
Seamaster 300 Master Chronometer Stainless Steel / Black / Bracelet
Reference
234.30.41.21.01.001
Movement
8912
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Omega Seamaster 300 Heritage 234.30.41.21.01.001 COMPLETE SET 2025

Omega Seamaster 300 Heritage 234.30.41.21.01.001 COMPLETE SET 2025

For sale is an Omega Seamaster 300 Heritage, this watch is in great condition, there is some light wear around the watch but nothing really deep or noticeable.

  • Condition: great condition with some light wear
  • Warranty Card Date: 2025
  • Complete Set: yes
Posted at
May 22, 2026, 11:28 AM
Active
[WTS] Omega Seamaster 300 Heritage 234.30.41.21.01.001 Full Set (2022) – Very Good Condition

Omega Seamaster 300 Heritage 234.30.41.21.01.001 Full Set (2022) – Very Good Condition

This Omega Seamaster 300 Heritage features a classic vintage-inspired design, black dial, and in-house Co-Axial Master Chronometer movement.

  • Condition: Very good condition
  • Movement: in-house Co-Axial Master Chronometer
  • Bracelet condition: some cosmetic wear consistent with normal use
Posted at
May 20, 2026, 11:31 PM
Active
[WTS] Omega Seamaster 300M Co-Axial 41mm 2220.80 Box and Card - $2,890

Omega Seamaster 300M Co-Axial 41mm 2220.80 Box and Card - $2,890

Omega - 2220.80 · $2,890
Up for sale is my Omega Seamaster 2220.80, a 41mm automatic co-axial cal 2500 movement watch with sapphire crystal and original Omega steel bracelet.

  • Condition: 8.8 / 10, great condition with minimal marks/hairlines
  • Case size: 41mm diameter
  • Bracelet size range: 7-7.25 inches for up to certain wrist sizes
  • Shipping method: Fedex Priority Shipping
Posted at
May 27, 2026, 9:40 PM
Active
[WTS] Omega Seamaster 300M Co-Axial 2220.80 41mm Box and Papers - $2,890  -Reserved Post for u/lastattempt3

Omega Seamaster 300M Co-Axial 2220.80 41mm Box and Papers - $2,890 -Reserved Post for u/lastattempt3

Omega - 2220.80 · $2,890
Up for sale is my Omega Seamaster 2220.80, a 41mm automatic co-axial cal 2500 movement watch with a steel case and original Omega steel bracelet.

  • Condition: 8.9/10 - great condition with minimal marks/hairlines
  • Case size: 41mm diameter
  • Movement type: co-axial cal 2500
  • Bracelet material: steel
Posted at
May 27, 2026, 9:15 PM
Active
[WTS] Omega Seamaster 300M White 42MM - Ref 210.32.42.20.04.001 (NEW 5/2026 COMPLETE SET)

Omega Seamaster 300M White 42MM - Ref 210.32.42.20.04.001 (NEW 5/2026 COMPLETE SET)

A brand new Omega Seamaster 300M White, Ref 210.32.42.20.04.001, complete with its original accessories.

  • Condition: New and unworn
  • Accessories included: outer sleeve, outer box, inner box, all cards, instruction manual, serialized hangtag, AD shipping coffin, travel case
Posted at
May 26, 2026, 8:41 PM
Active
[WTS] Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (NEW 5/2026 COMPLETE SET)

Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (NEW 5/2026 COMPLETE SET)

A 42MM Omega Seamaster 300M Blue, with a complete set of original accessories.

  • Condition: New & unworn
  • Size: 42mm diameter
  • Water Resistance: 30m depth rating (no water resistance mentioned, but standard for the model)
  • Year: 2026
Posted at
May 26, 2026, 8:38 PM
Active
[WTS] Omega Seamaster 300M 2532.20.00 Bracelet and Strap $3,499

Omega Seamaster 300M 2532.20.00 Bracelet and Strap $3,499

Omega - 2532.20.00 · $3,499
A Omega Seamaster 300M 2532.20.00 is being sold with a bracelet and strap.

  • Bracelet: Bracelet and Strap
Posted at
May 26, 2026, 11:44 AM
Active
[WTS] Omega Seamaster 300 Titanium - 41mm Blue Dial - 233.90.41.21.03.001

Omega Seamaster 300 Titanium - 41mm Blue Dial - 233.90.41.21.03.001

This Omega Seamaster 300 features a lightweight titanium case, blue dial, and micro-adjust clasp for comfort on the wrist.

  • Condition: Good overall pre-owned condition with normal wear
  • Size: 41mm diameter
  • Water Resistance: 200m depth rating
Posted at
May 25, 2026, 10:09 PM
Active
[WTS] Omega Seamaster 300M SMP Ceramic 21030422001001

Omega Seamaster 300M SMP Ceramic 21030422001001

Omega - 21030422001001 · $3,999
A black wave dial Omega Seamaster 300 on a bracelet, featuring minor cosmetic blemishes from desk wear.

  • Condition: Minor surface marks, in great shape
  • Box and papers included: yes
  • Bracelet condition: minor surface marks
Posted at
May 25, 2026, 1:02 PM
Active