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

Reference 234.30.41.21.01.001

Omega Seamaster 300 Master Chronometer Stainless Steel / Black / Bracelet

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

2025 Omega Seamster 300 Heritage 234.30.41.21.01.001 Full Set Excellent

Omega - 234.30.41.21.01.001 · $6,497

The Omega Seamaster 300 Co-Axial Master Chronometer blends vintage dive watch aesthetics with modern performance, powered by the METAS-certified Caliber 8912 and featuring a matte black dial and aluminum bezel.

Condition: Excellent
Case Size: 41mm
Depth Rating: 300m
Water Resistance: sapphire caseback

Posted at

Mar 20, 2026, 3:54 PM

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Omega Seamaster 41mm Black Dial (Ref. 234.30.41.21.01.001) 4400USD

Omega - 234.30.41.21.01.001 · $4,400

This listing is for a Omega Seamaster with a black dial and 41mm case size.

Diameter: 41mm

Posted at

Mar 11, 2026, 7:53 PM

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

Omega - 233.30.41.21.01.001 · $3,900

Up for sale is an Omega Seamaster 300 Heritage - 41mm - Black Dial, which functions perfectly mechanically.

Condition: Fantastic condition with minor hairlines
Case Size: 41mm
Dial Color: black

Posted at

Mar 19, 2026, 7:46 AM

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Omega Seamaster 300M Co-Axial 2220.80 41mm Box and Card- $2,790

Omega - 2220.80 · $2,790

Up for sale is my Omega Seamaster 2220.80. This watch measures at 41mm and has an automatic co-axial cal 2500 movement.

Condition: 8.9/10, great condition with minimal marks/hairlines on case, caseback, and bracelet
Case size: 41mm diameter
Movement: automatic co-axial cal 2500
Bracelet type: original Omega steel bracelet

Posted at

Mar 19, 2026, 4:37 AM

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Omega Seamaster 300 Heritage - Mint w/Straps - Under Warranty

Omega - 234.30.41.21.03.001 · $4,800

The Omega Seamaster 300 Heritage is a modern reissue of Omega's classic dive watch with a beautiful blue sandwich dial and vintage-inspired design.

Condition: Near Mint
Case size: 41mm diameter
Movement: Omega Master Chronometer automatic movement (Calibre 8912)
Bezel direction: Unidirectional dive bezel

Posted at

Mar 18, 2026, 2:02 PM

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OMEGA Heavyweights: Moonwatch 3861 Sapphire Sandwich (310.30.42.50.01.002) & Seamaster 300M Ceramic/Sedna Gold (210.62.44.20.01.001)

Omega - 3861, 310.30.42.50.01.002 and 210.62.44.20.01.001

Model names: Moonwatch & Seamaster 300M
Materials: Sapphire Sandwich, Ceramic/Sedna Gold

Posted at

Mar 17, 2026, 9:57 AM

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Omega Seamaster 300M Co-Axial 2220.80 41mm Box and Card- $2,790

Omega - 2220.80 · $2,790

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
Case size: 41mm
Movement: co-axial cal 2500
Crystal: sapphire crystal

Posted at

Mar 15, 2026, 9:46 PM

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Omega Seamaster 300 “No Time to Die” $7399

Omega - 210.90.42.20.01.001 · $7,399

The Omega Seamaster Diver 300M “No Time To Die” reference 210.90.42.20.01.001 is a lightweight, tactical, and unmistakably cool watch that blends cinematic heritage with serious dive-watch performance.

Condition: Used, with minor scratches on the clasp and a small mark on the lug
Material: Titanium
Bracelet type: Mesh
Depth rating: 300m

Posted at

Mar 15, 2026, 12:13 PM

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