Omega Seamaster 300 Seamaster 300 Master Co-Axial Stainless Steel / Black / Bracelet

Reference 233.30.41.21.01.001

Omega Seamaster 300 Master Co-Axial Stainless Steel / Black / Bracelet

About this watch

The Omega Seamaster 300 Master Co-Axial is a masterpiece that blends luxury with functionality. Its stunning design, robust movement, and impressive features make it a worthy investment for anyone looking to own a piece of horological history. With a water resistance of 300 meters, it’s designed for serious diving activities, while its comfortable fit and stylish design make it suitable for everyday wear. The watch features a 41mm round stainless steel case, black dial with stick and dot indexes, and a rotating bezel with a 0-60 scale. Protected by a sapphire crystal, the watch is resistant to scratches. At the heart of the Seamaster 300 is the Omega caliber 8400 movement, which incorporates the Co-Axial escapement for enhanced precision and stability.
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MSRP: $6,800
Market Price: $3,630

Key Features

  • 41mm round stainless steel case
  • Black dial with stick and dot indexes
  • Rotating bezel with 0-60 scale
  • Sapphire crystal protection
  • Omega caliber 8400 movement
  • Co-Axial escapement for precision and stability
  • 300m water resistance

Specifications

Brand
Omega
Family
Seamaster 300
Model
Seamaster 300 Master Co-Axial Stainless Steel / Black / Bracelet
Reference
233.30.41.21.01.001
Movement
8400
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
300

Current Listings

[WTS] Omega Seamaster 300 Steel Pumpkin Patina Lollipop Hand (Unpolished/Serviced)

Omega Seamaster 300 Steel Pumpkin Patina Lollipop Hand (Unpolished/Serviced)

Omega - 300
Additional details not available.

  • Condition: Unpolished/Serviced
Posted at
Jan 21, 2026, 8:59 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster 300 Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

Omega Seamaster 300 Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

Omega - 234.30.41.21.01.001 · $6,845
The Omega Seamaster 300 Heritage is a vintage-inspired dive watch with a timeless design, featuring a black dial, broad arrow hands, and warm toned lume.

  • Condition: Excellent
  • Case material: steel
  • Bracelet type: matching
  • Box set included: true
Posted at
Jan 21, 2026, 3:02 PM
Active
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[WTS] Omega Seamaster 300M Co-Axial 41mm 2220.80 Full Kit, + spare clean OEM Bezel Insert - $2,890

Omega Seamaster 300M Co-Axial 41mm 2220.80 Full Kit, + spare clean OEM Bezel Insert - $2,890

Omega - 2220.80 · $2,890
Up for sale is my Omega Seamaster 2220.80, featuring an automatic co-axial cal 2500 movement and measuring at 41mm.

  • Condition: 8.8/10 - great condition with minimal marks/hairlines
  • Case size: 41mm diameter
  • Bezel insert condition: scratches/fading, has a spare clean OEM bezel insert (9.5/10)
  • Movement: automatic co-axial cal 2500
Posted at
Jan 20, 2026, 8:42 PM
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[WTS] Omega Seamaster 300 Automatic Vintage Diver

Omega Seamaster 300 Automatic Vintage Diver

Omega - Seamaster 300
This Omega Seamaster 300 is a vintage automatic diver's watch. It is running at the time of posting and is being sold as a vintage piece.

  • Condition: Vintage, sold as-is
  • Movement: Automatic
  • Shipping: Worldwide
Posted at
Jan 20, 2026, 3:02 AM
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[WTS] Omega Seamaster 300 Heritage Blue - Full Set + Extra Straps - $5,500

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

Omega - 234.30.41.21.03.001 · $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
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[WTS] Omega Seamaster 300 – Ref. 210.30.42.20.01.001 – 2019 – Full Set - $4099

Omega Seamaster 300 – Ref. 210.30.42.20.01.001 – 2019 – Full Set - $4099

Omega - 210.30.42.20.01.001 · $4,099
This is a 2019 Omega Seamaster 300, one of the most popular modern dive watches, featuring an iconic design and Master Chronometer performance.

  • Condition: Used with honest wear, could benefit from a light polish to look like new
  • Case size: 42mm diameter
  • Water resistance: 300m depth rating
Posted at
Jan 18, 2026, 6:43 PM
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[WTS] 2023 OMEGA Seamaster 300 234.30.41.21.03.002 Summer Blue Full Set

2023 OMEGA Seamaster 300 234.30.41.21.03.002 Summer Blue Full Set

OMEGA - 234.30.41.21.03.002 · $5,299
This 2023 Omega Seamaster 300 Summer Blue has been inspected mechanically and comes as a full set, including outer and inner boxes, travel pouch, warranty card, pictograms card, and master chronometer card.

  • Condition: Pre-owned, some wear marks
  • Year Purchased: 2023
  • Shipping Method: FedEx overnight
Posted at
Jan 17, 2026, 3:51 PM
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[WTS] Omega Seamaster 300 Co-Axial Master Chronometer 41 mm (Ref. 234.30.41.21.01.001) — $4,600 shipped CONUS

Omega Seamaster 300 Co-Axial Master Chronometer 41 mm (Ref. 234.30.41.21.01.001) — $4,600 shipped CONUS

Omega - 234.30.41.21.01.001 · $4,600
This Omega Seamaster 300 Co-Axial Master Chronometer features a 41mm stainless steel case, black 'sandwich' dial, and ceramic bezel. It has been METAS certified and comes in excellent working condition.

  • Condition: Excellent overall condition, with one small scuff on the side of the case
  • Case size: 41 mm
  • Dial color: Black
  • Water resistance: 300m
Posted at
Jan 16, 2026, 11:15 AM
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[WTS] Omega Seamaster 300M - "No Time To Die" - 42mm

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

Omega - 210.90.42.20.01.001 · $6,700
This Omega Seamaster Diver 300M features a lightweight 42mm titanium case, matte black tropical aluminum dial and bezel, and vintage-inspired details throughout.

  • Condition: Very good overall
  • Case size: 42mm diameter
  • Case material: Titanium
  • Movement type: Co-Axial Master Chronometer Calibre 8806
Posted at
Jan 15, 2026, 6:42 PM
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