Omega Seamaster Diver 300m Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet

Reference 210.20.42.20.03.002

Omega Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is an exceptional watch that successfully merges style, functionality, and durability. Its stunning blue dial with Sedna gold accents is reminiscent of the deep ocean, while its robust stainless steel case and ceramic bezel provide a durable and scratch-resistant exterior. At the heart of this luxury timepiece lies the Omega caliber 8800, a self-winding movement featuring a Co-Axial escapement that increases accuracy and reduces friction. With a power reserve of 55 hours, Master Chronometer certification, and resistance to magnetic fields up to 15,000 gauss, this watch is both precise and reliable. The Seamaster Diver 300M boasts an impressive water resistance of 300m, making it perfect for diving or everyday wear. Whether you're an avid diver or simply appreciate fine craftsmanship, this watch is sure to impress with its versatility, style, and luxury appeal.

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MSRP: $12,700

Market Price: $7,610

Key Features

42mm Stainless Steel Case
Sapphire Crystal Glass
300m Water Resistance
Master Chronometer Certification
Omega Caliber 8800 Movement
Co-Axial Escapement
55-Hour Power Reserve

Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

Seamaster Diver 300M Master Co-Axial 42 Stainless Steel / Sedna Gold / Blue / Bracelet

Reference

210.20.42.20.03.002

Movement

8800

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

42mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

[US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

Omega - 210.20.42.20.03.002 · $6,900

Up for sale is an Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm watch that functions perfectly mechanically without issue.

Condition: Fantastic condition with minor hairlines
Case material: Sedna Gold
Diameter: 42mm

Posted at

May 24, 2026, 3:06 PM

Active

View listing on r/WatchExchange

[US] Omega Seamaster SMP300 - Blue Dial - Sedna Gold - 42mm - 210.20.42.20.03.002 - Full Set

Omega - 210.20.42.20.03.002 · $6,925

A Omega Seamaster SMP300 with a blue dial and Sedna gold case, featuring a 42mm size.

Condition: Fantastic with minor hairlines
Case size: 42mm diameter

Posted at

May 17, 2026, 9:17 AM

Active

View listing on r/WatchExchange

Omega Seamaster Diver 300m / FULL SET / Professional Co-Axial / Black Wave Dial / 41mm / 212.30.41.20.01.002 / $3,099 Shipped!

Omega - 212.30.41.20.01.002 · $3,099

This Omega Seamaster Diver is a 41mm watch with a black wave dial and is part of the full set.

Case Diameter: 41mm

Posted at

May 27, 2026, 10:51 PM

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Omega Seamaster Diver 300M 210.30.42.20.01.001 Black Wave Dial Full Set

Omega - 210.30.42.20.01.001 · $4,050

The Omega Seamaster Diver 300M features a black ceramic bezel and laser-engraved wave dial with an exhibition caseback window.

Condition: Good condition overall, crystal and bezel are clean, bracelet shows normal signs of wear
Movement: Co-Axial Master Chronometer
Water resistance: 30 ATM (unknown depth rating)
Bracelet condition: shows normal signs of wear

Posted at

May 27, 2026, 7:55 PM

Active

View listing on r/WatchExchange