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

Reference 210.30.42.20.01.001

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of watchmaking, blending luxury and functionality in a stunning package. Crafted from premium materials, this timepiece boasts exceptional build quality, Master Chronometer certification for accuracy, and an impressive water resistance of 300 meters. Its versatile design seamlessly transitions from casual to formal wear, while the comfortable fit with an adjustable bracelet ensures all-day wearability. This watch is not just a statement piece; it's a testament to Omega's commitment to excellence.

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MSRP: $5,900

Market Price: $4,102

Key Features

42mm round case made from stainless steel
Black ceramic bezel with 0-60 scale
Sapphire crystal glass for added protection
Master Chronometer certification for accuracy and performance
Water resistance of 300 meters (1,000 feet)
Self-winding movement powered by Omega caliber 8800
Co-Axial escapement with reduced friction and increased accuracy

Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

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

Reference

210.30.42.20.01.001

Movement

8800

Movement Features

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

Case

42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

300

Current Listings

2026 BNIB OMEGA SEAMASTER PROFESSIONAL $5400

OMEGA - 210.30.42.20.01.001 · $5,400

This brand new Omega Seamaster Professional features a 42mm stainless steel case, black dial, and ceramic bezel. It comes with a stainless steel bracelet, sapphire crystal, and is water-resistant up to 300m.

Condition: Brand New, Cosmetic Condition: 10/10 Unworn
Movement: Calibre 8800
Power Reserve: 55 Hours
Case Size: 42mm diameter

Posted at

Jan 31, 2026, 12:13 AM

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[US] Omega SMP300 - Black Dial - 42mm - 210.30.42.20.01.001

Omega - 210.30.42.20.01.001 · $4,550

Up for sale is an Omega Seamaster Professional 300m - Black Dial - 42mm, which functions perfectly mechanically.

Condition: Fantastic with minor hairlines
Case size: 42mm diameter
Water resistance: 300m

Posted at

Jan 30, 2026, 8:29 AM

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[US] Omega Seamaster Professional 300m - Black Dial - 42mm - 210.30.42.20.01.001 - Full Set

Omega - 210.30.42.20.01.001 · $4,575

This Omega Seamaster Professional is a 42mm watch featuring a black dial and 300m water resistance.

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

Posted at

Jan 23, 2026, 9:17 AM

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Omega Seamaster 300 - Black Wave Dial - 210.30.42.20.01.001 ( new / 2025 )

Omega - 210.30.42.20.01.001 · $4,750

This Omega Seamaster 300 is a brand new timepiece with a black wave dial, featuring a 42mm stainless steel case and the Master Co-Axial Movement. It comes complete with all original boxes, papers, booklets, hang tag, and an Omega warranty card dated January 2025.

Condition: Brand new
Case Size: 42mm
Movement: 8800 Master Co-Axial

Posted at

Jan 31, 2025, 3:09 PM

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Omega Seamaster Diver 300M 007 NTTD

Omega - 210.90.42.20.01.001 · $8,750

Selling my Omega Seamaster NTTD edition ref. 210.90.42.20.01.001, a full kit with the Omega/007 branded canvas and leather watch roll, hang tag, all cards and boxes.

Condition: Excellent with minor scratches
Water Resistance: 300m
Case Dimensions: 42mm diameter

Posted at

Feb 5, 2026, 9:53 AM

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Omega Seamaster Diver 300m Bronze Gold on Titanium 2024 Complete Set

Omega - 210.90.42.20.10.001 · $9,800

A modern execution of Omega’s iconic professional dive watch, the Seamaster Diver 300M reflects the brand’s focus on technical performance and refined design. Housed in a 42mm grade 2 titanium case with 9K Bronze Gold, this reference features a distinctive green dial with matching bezel, delivering a contemporary yet unmistakable Seamaster aesthetic built for both daily wear and serious dive capability.

Condition: Excellent Condition with little to no signs of wear at all
Case material: grade 2 titanium
Case size: 42mm diameter
Water resistance: 300m depth rating

Posted at

Feb 4, 2026, 2:53 PM

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Omega Seamaster Diver 300m 2025 Unworn- Complete Set

Omega - 210.30.42.20.01.018 · $6,500

The Omega Seamaster Diver 300M is a modern execution of the iconic professional dive watch, featuring a refreshed design with a 42mm stainless steel case and black dial.

Condition: Unworn
Movement: Omega Co-Axial Master Chronometer automatic movement
Water resistance: 300 meters
Case size: 42mm

Posted at

Feb 4, 2026, 2:42 PM

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