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

Reference 234.30.41.21.03.001

Omega Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet

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.

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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

Omega Seamaster 300M VINTAGE (Ref 168.1503)

Omega - 168.1503 · $2,500

This vintage Omega Seamaster 300M is a numbers matching all ordinal watch from around 1984. It's being sold as a head only unit without a strap.

Condition: Super clean, runs well
Case size: 42mm diameter
Serial matching: numbers matching

Posted at

Jan 23, 2026, 3:22 PM

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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

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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

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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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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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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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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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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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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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