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.

Buy Now on Jomashop

This is an affiliate link

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

(Omega Seamaster Diver 300M Chronograph Blue Dial – Full Set)

Omega - Diver 300M Chronograph Blue Dial · $6,000

A Omega Seamaster Diver 300M Chronograph with a blue dial, sold as part of a full set. The watch features a chronograph function and is suitable for diving.

Shipping Methods: FedEx or UPS Overnight
Insurance: fully insured
Payment Options: Zelle, wire, or PayPal (F&F)

Posted at

Dec 15, 2025, 4:22 PM

Active

View listing on r/WatchExchange

OMEGA Seamaster Diver 300M "Paris 2024" Ref. 522.21.42.20.04.001 + Five Stripes "Paris 2024" NATO Strap - ULTIMATE SET!

OMEGA - 522.21.42.20.04.001 · $8,250

The OMEGA Seamaster Diver 300M 'Paris 2024' is a luxurious tribute to sporting excellence, featuring a 42mm case combining stainless steel with 18K Moonshine Gold. The watch has a white ceramic dial and is powered by the Calibre 8800 Master Chronometer.

Condition: UNWORN
Case size: 42mm
Water resistance: 300m
Movement type: Calibre 8800 Master Chronometer

Posted at

Dec 14, 2025, 11:59 PM

Active

View listing on r/WatchExchange

OMEGA Seamaster Diver 300M NTTD 007 Edition Ref. 210.90.42.20.01.001 + NATO 007 Strap - ULTIMATE SET!

OMEGA - 210.90.42.20.01.001 · $10,000

The OMEGA Seamaster Diver 300M 007 Edition is a unique timepiece crafted from Grade 2 Titanium, featuring a tropical brown aluminum bezel ring and dial. It's designed with military needs in mind and powered by OMEGA's Co-Axial Master Chronometer Calibre 8806.

Condition: UNWORN
Material: Grade 2 Titanium
Bracelet type: Titanium mesh bracelet
Movement: Co-Axial Master Chronometer Calibre 8806

Posted at

Dec 14, 2025, 11:53 PM

Active

View listing on r/WatchExchange

Omega Seamaster Diver 300M - 210.32.42.20.06.001 - Grey Wave / Rubber Strap - Full Set

Omega - 210.32.42.20.06.001 · $4,200

A 2023 Omega Seamaster Diver 300M with a grey wave dial and blue ceramic bezel, paired with a comfortable blue rubber strap.

Condition: like new
Material: stainless steel
Water resistance: 300m

Posted at

Dec 14, 2025, 5:31 PM

Active

View listing on r/WatchExchange

2021 Omega Seamaster Diver 300M Nekton Edition 210.32.42.20.01.002 Complete Set

Omega - 210.32.42.20.01.002 · $4,050

A 2021 Omega Seamaster Diver 300M Nekton Edition in 42mm, featuring a dark grey dial with polished waves and a Grade 5 titanium bezel.

Condition: great to excellent, with some minor marks on the case and strap
Movement: Cal. 8806
Lume: nuclear
Water resistance: 300m

Posted at

Dec 14, 2025, 1:34 PM

Active

View listing on r/WatchExchange

Omega Seamaster Diver 300M “Commander’s Watch” – 41mm – Full Set

Omega - Diver 300M ‘Commander’s Watch’

Size: 41mm

Posted at

Dec 13, 2025, 2:02 PM

Active

View listing on r/WatchExchange

Omega Seamaster Diver 300M Two Tone 42mm Black Dial 210.20.42.20.01.002 Complete

Omega - 210.20.42.20.01.002 · $7,250

Omega Seamaster Diver 300M Two Tone 42mm Black Dial in very good condition with minimal handling marks.

Condition: In very good condition, rated at 9.8/10
Box And Papers: true
Links Included: 3

Posted at

Dec 12, 2025, 11:02 AM

Active

View listing on r/WatchExchange

2021 Omega Seamaster Diver 300M Nekton Edition 210.32.42.20.01.002 Complete Set

Omega - 210.32.42.20.01.002 · $4,250

The Omega Seamaster Diver 300M Nekton Edition is a 42mm watch with a dark grey dial, polished waves as contrast, and a Grade 5 titanium bezel. It has a solid case back and a full red seconds hand.

Condition: Great to excellent condition, with some marks and signs of use on the case and strap
Movement: Omega Cal. 8806, METAS certified
Water Resistance: 300m
Lume: nuclear

Posted at

Dec 11, 2025, 2:40 PM

Active

View listing on r/WatchExchange

2023 Omega Seamaster Diver 300M "Seaweed" 42mm Green Dial 210.32.42.20.10.001 Full Set

Omega - 210.32.42.20.01.001 · $4,600

2023 Omega Seamaster Diver 300M 'Seaweed' model featuring a 42mm stainless steel case with green ceramic dial and rotating dive bezel.

Condition: Very nice preowned condition with some light scratches on the case and buckle
Case material: Stainless Steel
Case dimensions: 42mm diameter
Bezel material: Stainless Steel

Posted at

Dec 9, 2025, 8:07 PM

Active

View listing on r/WatchExchange