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

Omega Seamaster 300 Master Chronometer 41mm Steel Black Dial 2024 Box Papers

Omega - 234.30.41.21.01.001 · $4,925

This Omega Seamaster 300 features a stainless steel case with black aluminium bezel and a black dial, powered by the Omega Calibre 8912 automatic movement.

Condition: Excellent pre owned condition with light wear on the case and bracelet
Case size: 41mm diameter
Water resistance: unknown
Movement power reserve: 60 hours

Posted at

Dec 11, 2025, 8:59 PM

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Omega Seamaster 300 Heritage 41mm 234.30.41.21.01.001 - Excellent Condition

Omega - 234.30.41.21.01.001 · $4,800

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

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Omega Seamaster 300m ‘Electric Blue’ 2263.80

Omega - 2263.80 · $1,599

A 36mm Omega Seamaster 300m Quartz watch with an Electric Blue finish.

Size: 36mm diameter
Material: quartz

Posted at

Dec 11, 2025, 3:03 PM

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Omega Seamaster 300M Grey dial Full set 42MM

Omega - 210.32.42.20.06.001 · $3,850

A Omega Seamaster 300M with a grey dial, featuring a chronometer with date, helium escape valve, uni-rotating bezel, and transparent caseback.

Condition: Good condition
Case diameter: 42 MM
Dial color: Grey
Weight: 110 grams

Posted at

Dec 10, 2025, 7:19 PM

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Omega Seamaster 300 Master Co-Axial – 41mm “Retro” – 233.30.41.21.01.001 – $3,399 Shipped

Omega - 233.30.41.21.01.001 · $3,399

This Omega Seamaster 300 Master Co-Axial features a 41mm stainless steel case, black dial with vintage-tone lume, and a ceramic bezel.

Condition: Excellent overall with light, honest wear
Case size: 41mm
Water resistance: 300m
Movement type: Cal. 8400

Posted at

Dec 7, 2025, 9:47 PM

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OMEGA Seamaster 300 Black - Full Set - B&P - 8/10 Condition

OMEGA - 210.32.42.20.01.001 · $4,450

A study in stealth and sophistication featuring a laser-engraved wave-pattern dial and polished ceramic bezel in deep black. Paired with its brushed steel case and integrated bracelet, this 42mm watch delivers a powerful monochromatic statement.

Condition: 8/10, minor used handling marks on case
Case size: 42mm
Water resistance: 300m

Posted at

Dec 7, 2025, 7:50 PM

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Omega Seamaster 300M Nekton 42mm 210.30.42.20.01.002 Full set

Omega - 210.30.42.20.01.002 · $4,400

Up for sale is an Omega Seamaster 300M Nekton edition 42mm, featuring a primary matte finish dial with polished waves and solid case back.

Condition: Great to excellent condition, some marks on the case and bracelet
Movement: Omega Cal. 8806, METAS certified
Water resistance: not specified
Strap: OEM Omega rubber strap (can be included in the sale for additional cost)

Posted at

Dec 7, 2025, 12:02 PM

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Omega Seamaster 300M - Ref # 212.30.41.20.03.001, 2018, Box and Papers

Omega - 212.30.41.20.03.001 · $3,550

This Omega Seamaster Professional Diver 300M is a sleek 2018 model featuring a 41mm stainless steel case, blue dial, and automatic 2500 Co-Axial movement.

Condition: Very good
Case size: 41mm diameter
Material: stainless steel
Bezel type: blue ceramic uni-directional

Posted at

Dec 6, 2025, 6:01 PM

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