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.
Buy Now on Jomashop
This is an affiliate link
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 Heritage 41mm 234.30.41.21.01.001 - Excellent Condition

Omega Seamaster 300 Heritage 41mm 234.30.41.21.01.001 - Excellent Condition

This Omega Seamaster 300 Heritage model features a 41mm case size and is in excellent condition. The watch comes with almost full kit, including box and papers, all bracelet links, but no warranty card.

  • Condition: Excellent, with superficial scratches on clasp and bracelet
  • Case diameter: 41mm
  • Movement rating: +2 sec/day after Omega service
  • Bracelet links: All included
Posted at
Dec 1, 2025, 10:30 PM
Active
[WTS] Vintage 1966 Omega Seamaster 300 165.024 Calibre 550 Fresh Service!

Vintage 1966 Omega Seamaster 300 165.024 Calibre 550 Fresh Service!

This Omega Seamaster 300 is a vintage watch with an original bracelet and engraving on the caseback. It has been freshly serviced and comes with a 1 year warranty.

  • Condition: Decent
  • Bracelet condition: Original
  • Dial patina: Nice even
Posted at
Dec 1, 2025, 9:55 AM
Active
2022 Omega Seamaster 300M “Great White” white dial 42MM box and papers on rubber [WTS]

2022 Omega Seamaster 300M “Great White” white dial 42MM box and papers on rubber

This is a 2022 Omega Seamaster 300M 'Great White' with a white dial and 42MM case diameter.

  • Condition: good condition
  • Movement: Omega 8800
  • Power reserve: 55 hours
  • Crystal: sapphire crystal
Posted at
Nov 30, 2025, 8:26 PM
Active
[WTS]: Omega Seamaster 300M White

: Omega Seamaster 300M White

Selling a used Omega Seamaster 300M in excellent condition, purchased in 2022 but not worn much due to its size being too big for the seller's wrists. The watch is operating within METAS specs and includes all original accessories.

  • Condition: Excellent with minor scratches and desk diving marks
  • Size: 42mm diameter
  • Depth rating: 300m
  • Year purchased: 2022
Posted at
Nov 27, 2025, 11:36 PM
Active

(SOLD) Omega Seamaster 300M | 210.62.44.20.01.00 - Full Set

The Omega Seamaster 300M is a stainless steel automatic watch with a date display and water resistance of up to 300m.

  • Status: (SOLD)
Posted at
Apr 7, 2025, 10:22 AM
Active
Omega Seamaster 300M - Black Aluminum - 210.30.42.20.01.010 ( new / 2025 )

Omega Seamaster 300M - Black Aluminum - 210.30.42.20.01.010 ( new / 2025 )

This Omega Seamaster 300M features a 42mm stainless steel case with a black aluminum dial and mesh bracelet, powered by the Master Co-Axial Movement.

  • Condition: Brand new
  • Case size: 42mm
  • Movement: 8806 Master Co-Axial
Posted at
Apr 6, 2025, 4:26 PM
Active
Omega Seamaster 300M - Summer Blue - 42mm - 210.30.42.20.03.003 ( new / 2024 )

Omega Seamaster 300M - Summer Blue - 42mm - 210.30.42.20.03.003 ( new / 2024 )

This Omega Seamaster 300M 42mm features a Summer Blue dial on a stainless steel bracelet, powered by the Master Co-Axial movement.

  • Condition: Brand new
  • Case size: 42mm
  • Movement type: Master Co-Axial
Posted at
Apr 4, 2025, 2:51 PM
Active
Omega Seamaster 300M | 210.62.44.20.01.00 - Full Set

Omega Seamaster 300M | 210.62.44.20.01.00 - Full Set

A black ceramic and 18K gold Omega Seamaster 300M with a wave dial, measuring 43.5mm in diameter.

  • Condition: Very Good (VG)
  • Case size: 43.5mm
  • Material: Black Ceramic and 18K Gold
Posted at
Apr 4, 2025, 12:18 PM
Active