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 · $7,000

An Omega Seamaster SMP300 with a blue dial and Sedna gold case, measuring 42mm in diameter.

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

Posted at

Apr 26, 2026, 7:48 AM

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

Omega - 210.20.42.20.03.002 · $7,025

Omega Seamaster SMP300 in blue dial and Sedna gold, 42mm diameter, functions perfectly mechanically.

Condition: Fantastic condition with minor hairlines on clasp, case, and bracelet
Case Diameter: 42mm
Clasp Condition: minor hairlines
Strap Status: fully linked

Posted at

Apr 19, 2026, 6:40 AM

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2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

Omega - 210.30.42.20.10.001 · $5,395

A 2024 Omega Seamaster Diver 300M in Green Seaweed, a high-end diver's watch featuring a 42mm case and excellent condition.

Condition: Excellent condition with minimal signs of wear
Year: 2024
Depth rating: 300m

Posted at

Apr 30, 2026, 9:58 AM

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Omega Seamaster Diver 300M Grey Dial | Ref. 210.32.42.20.06.001

Omega - 210.32.42.20.06.001 · $4,100

This Omega Seamaster Diver 300M features a grey laser-engraved wave dial paired with a ceramic bezel, and is powered by the Omega Co-Axial Master Chronometer movement.

Condition: Very good condition, showing normal signs of wear consistent with careful use.
Case size: 42mm diameter
Dial color: Grey
Bezel material: Ceramic

Posted at

Apr 28, 2026, 9:16 PM

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Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2020

Omega - 212.30.41.20.01.003 · $3,477

A black dial Omega Seamaster Diver 300m in excellent condition, featuring a 41mm case and a clean sapphire crystal.

Condition: Excellent
Water Resistance: 300m
Case Size: 41mm

Posted at

Apr 28, 2026, 2:24 PM

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Omega Seamaster Diver 300M James Bond 60th Anniversary 210.30.42.20.03.002 $6,999

Omega - 210.30.42.20.03.002 · $6,999

This Omega Seamaster Diver 300M James Bond 60th Anniversary watch is a special edition launched to celebrate six decades of 007 on screen. It features a reliable Omega Calibre 8806 movement that is COSC and METAS certified, with resistance to magnetic fields up to 15,000 gauss.

Condition: Preowned - Excellent
Movement: Omega Calibre 8806
Certifications: COSC, METAS certified
Magnetic field resistance: 15,000 gauss

Posted at

Apr 28, 2026, 11:37 AM

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Omega Seamaster Diver 300M 210.30.42.20.03.003 “Summer Blue” — 75th Anniversary, Cal. 8800, Fullset 2023 — $4,599 Shipped (Tariff Covered)

Omega - 210.30.42.20.03.003 · $4,599

Seamaster Diver 300M 'Summer Blue' edition, celebrating the brand's 75th anniversary, with Calibre 8800 movement and a full set of accessories for 2023.

Year: 2023
Movement: Cal. 8800

Posted at

Apr 28, 2026, 9:45 AM

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Omega Seamaster Diver 300M 210.22.42.20.03.001 Two-Tone Blue Dial Full Set

Omega - 210.22.42.20.03.001 · $6,799

A two-tone Omega Seamaster Diver 300M with a blue dial and matching blue rubber strap, featuring an automatic movement and a stainless steel and yellow gold case.

Condition: Very Good
Case size: 42mm diameter
Movement type: Automatic
Serial number status: Blurred in photos for security

Posted at

Apr 27, 2026, 9:48 AM

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