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

Reference 210.30.42.20.03.001

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of watchmaking, boasting a robust 42mm stainless steel case, blue ceramic bezel with rotating 0-60 scale, and stunning blue dial with wave pattern. Protected by sapphire crystal, this timepiece showcases the intricate Omega caliber 8800 movement, featuring Co-Axial escapement and Master Chronometer certification for exceptional accuracy and resilience against magnetic fields up to 15,000 gauss.

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MSRP: $5,900

Market Price: $3,806

Key Features

42mm stainless steel case
Blue ceramic bezel with rotating 0-60 scale
Stunning blue dial with wave pattern
Sapphire crystal protection
Omega caliber 8800 movement
Co-Axial escapement
Master Chronometer certification
Water resistance up to 300 meters

Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

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

Reference

210.30.42.20.03.001

Movement

8800

Movement Features

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

Case

42mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

Memorial Day Weekend Sale – Omega Seamaster Professional 300M Blue Wave Dial 210.30.42.20.03.001 – $4195 + Shipping OBO

Omega - 210.30.42.20.03.001 · $4,195

This Omega Seamaster Professional 300M features a blue ceramic wave dial and is equipped with the METAS-certified Master Chronometer Calibre 8800. It's a versatile watch suitable for various occasions, including formal events and outdoor activities.

Condition: Excellent overall condition with minor signs of wear from normal use
Year: 2023
Warranty: Omega factory warranty through 2028
Features: METAS-certified Master Chronometer Calibre 8800,ceramic wave dial,ceramic bezel,display caseback,micro-adjust clasp

Posted at

May 27, 2026, 2:29 PM

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Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (NEW 5/2026 COMPLETE SET)

Omega - 210.30.42.20.03.001 · $5,600

A 42MM Omega Seamaster 300M Blue, with a complete set of original accessories.

Condition: New & unworn
Size: 42mm diameter
Water Resistance: 30m depth rating (no water resistance mentioned, but standard for the model)
Year: 2026

Posted at

May 26, 2026, 8:38 PM

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2021 Omega Seamaster Diver SMP300m 42mm Blue Wave Dial Reference 210.30.42.20.03.001 Box and Papers

Omega - 210.30.42.20.03.001 · $4,377

2021 Omega Seamaster Diver SMP300M with a 42mm Blue Wave Dial, in excellent condition.

Condition: Excellent
Case size: 42mm diameter
Water resistance: 300m depth rating

Posted at

May 26, 2026, 2:51 PM

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Omega Seamaster Pro 300 210.30.42.20.03.001 COMPLETE SET

Omega - 210.30.42.20.03.001 · $4,150

This Omega Seamaster Pro features a [missing details] with very little signs of wear, comes with the complete set including double boxed and all accessories.

Condition: Excellent condition with very little signs of wear
Payment Methods Accepted: Pretty much every payment method including crypto and cash, some fees may apply
Local Meeting Available: Yes, in southwest FL
Open To Trades: Only for brands Tudor, Cartier, Rolex, Omega, Breitling, AP

Posted at

May 22, 2026, 11:52 AM

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Omega Seamaster 300M Blue 42MM - Ref 210.30.42.20.03.001 (NEW • UNWORN 5/2026 COMPLETE SET)

Omega - 210.30.42.20.03.001 · $5,900

This Omega Seamaster 300M Blue is a 42MM watch with various accessories included in the sale.

Condition: New, unworn
Dimensions: 42MM diameter
Case contents: outer sleeve, outer box, inner box, cards, instruction manual, UPC stickers, AD shipping coffin, travel case

Posted at

May 19, 2026, 7:07 PM

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Omega Seamaster Pro 300 210.30.42.20.03.001 COMPLETE SET

Omega - 210.30.42.20.03.001 · $4,250

This Omega Seamaster Pro is being sold in a complete set, including double boxed and all accessories.

Condition: Excellent
Complete set included: yes, double boxed, all 3 cards, full links
Payment methods accepted: crypto, cash, other methods
Meeting options: local meetup, shipping available

Posted at

May 15, 2026, 2:15 PM

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2025 Omega Seamaster Professional Diver 300M Blue 210.30.42.20.03.001 Full Set

Omega - 210.30.42.20.03.001 · $4,800

2025 Omega Seamaster Professional Diver 300M Blue, a stainless steel watch with 42mm case size and automatic movement.

Condition: Like New
Case Material: Stainless Steel
Bezel Material: Stainless Steel
Dial Material: Blue Wave Ceramic

Posted at

May 14, 2026, 7:51 PM

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Omega Seamaster Professional 300M 42mm 210.30.42.20.03.001 | 2023 Box and Papers

Omega - 210.30.42.20.03.001 · $4,500

This Omega Seamaster Professional 300M is a 42mm watch that comes with the latest box and papers from 2023.

Condition: Great Pre-Owned
Year: 2023
Links: 11.5 links
Warranty: 1-year warranty remaining

Posted at

May 14, 2026, 7:38 PM

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Omega Seamaster Professional 300m Diver Blue Dial/Bezel

Omega - 210.30.42.20.03.001 · $4,650

This Omega Seamaster Professional is a 42mm diver's watch with a blue ceramic dial and bezel, featuring an automatic movement with a 55-hour power reserve.

Condition: Excellent
Case size: 42mm diameter
Thickness: 14mm
Lug width: 20mm

Posted at

Apr 6, 2025, 8:49 AM

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