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

Reference 210.30.42.20.06.001

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a stunning piece of horological craftsmanship that resonates with both watch enthusiasts and casual wearers alike. With its striking grey dial and robust construction, this model blends elegance with functionality. The design of the Seamaster Diver 300M is a perfect marriage of style and utility, featuring a 42 mm round case made from high-quality stainless steel and a ceramic bezel with a rotating 0-60 dive scale. At the core lies the Omega Caliber 8800, a self-winding movement certified as a Master Chronometer, guaranteed to provide precision and performance. With its impressive water resistance of up to 300 meters and Co-Axial escapement reducing friction between moving parts, this watch is built to last. It's an experience on your wrist that combines functionality with aesthetic appeal.

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MSRP: $5,900

Market Price: $3,814

Key Features

42mm round case made from stainless steel
Ceramic bezel with rotating 0-60 dive scale
Omega Caliber 8800 self-winding movement
Master Chronometer certification
300m water resistance
Co-Axial escapement reducing friction between moving parts
Sapphire crystal glass scratch-resistant

Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

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

Reference

210.30.42.20.06.001

Movement

8800

Movement Features

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

Case

42mm

Dial Color

Grey

Crystal

Sapphire

Water Resistance

300

Current Listings

Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,800

a Seamaster 300m with box and cards, available for sale

Box Papers: yes
Location: NJ USA

Posted at

Apr 4, 2026, 10:04 AM

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[US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,700

Up for sale is an Omega Seamaster SMP300 - Silver Dial - 42mm watch that functions perfectly mechanically.

Condition: Fantastic condition
Case size: 42mm diameter
Links: 10 full links

Posted at

Mar 31, 2026, 8:26 AM

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Omega Seamaster Professional 300M 42mm 210.30.42.20.06.001 | 2025 Box and Papers

Omega - 210.30.42.20.06.001 · $4,550

A Omega Seamaster Professional 300M in 2025 condition, with a slight wear on the polished parts of the case. It features a Master Chronometer and includes various accessories such as a card holder and double-boxed packaging.

Condition: Excellent Pre-Owned Condition with slight wear on polished parts of case
Service History: +5 s/d 340+ AMP
Links: 10.5 Links

Posted at

Mar 30, 2026, 9:28 PM

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Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,900

A Omega Seamaster 300m is being sold with its box and cards.

Box: true
Cards: true

Posted at

Mar 27, 2026, 5:57 PM

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Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,725

This Omega Seamaster SMP300 features a silver dial and a 42mm case, with all watch functions working perfectly.

Condition: Excellent/Fantastic with minor hairlines
Case size: 42mm diameter
Serial number date: 2021

Posted at

Mar 24, 2026, 8:23 AM

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Omega Seamaster Diver 300m Chrome Grey 210.30.42.20.06.001 + Straps Warranty

Omega - 210.30.42.20.06.001 · $3,950

This Omega Seamaster Diver 300m features a stunning PVC Chrome Grey dial, comes in great shape with only light signs of wear, and is delivered as a fully complete 2019 dated set.

Condition: near mint condition
Diameter: 42mm
Depth rating: 300m
Warranty: 1 year

Posted at

Feb 20, 2025, 11:35 AM

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Omega Seamaster Diver 300M 210.30.42.20.03.001 Blue 2022 Full Set - $4,395

Omega - 210.30.42.20.03.001 · $4,395

This Omega Seamaster Diver 300m Blue is a 2022 model, featuring a blue dial and coming with various accessories such as the inner and outer box, card holder, international warranty card, pictograms card, master chronometer card, and instructions manual. The watch has been thoroughly tested on a timegrapher and is running well without needing service.

Condition: Excellent condition with minimal signs of wear
Year: 2022
Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual

Posted at

Apr 4, 2026, 11:28 AM

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Omega Seamaster Diver 300M 42mm Two-Tone Blue Dial | Ref. 210.22.42.20.03.001 | 2023 | Full Set | Mint

Omega - 210.22.42.20.03.001 · $6,450

The Omega Seamaster Diver 300M features a 42mm stainless steel case with solid 18K yellow gold accents, and is powered by the METAS-certified Co-Axial Master Chronometer Caliber 8800. This modern dive watch design delivers strong wrist presence while remaining versatile.

Condition: Mint
Case material: stainless steel and 18K yellow gold
Movement: Co-Axial Master Chronometer Caliber 8800 (METAS-certified)
Depth rating: 300M water resistance

Posted at

Apr 4, 2026, 3:19 AM

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Omega Seamaster Diver 300M Chronograph 44mm Ref. 210.22.44.51.03.001 | Full Set | Mint Condition

Omega - 210.22.44.51.03.001 · $9,250

This Omega Seamaster Diver 300M Chronograph is a striking sport-luxury piece with strong wrist presence and everyday versatility, featuring a stainless steel case with 18K yellow gold accents and a blue ceramic bezel.

Condition: Mint condition
Case size: 44mm
Movement: Co-Axial Master Chronometer Caliber 9900 (METAS-certified, anti-magnetic)
Water resistance: 300M

Posted at

Apr 4, 2026, 2:04 AM

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