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

[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 – Ref. 210.30.42.20.01.001 – 2019 – Full Set - $4099

Omega - 210.30.42.20.01.001 · $4,099

This is a 2019 Omega Seamaster 300, one of the most popular modern dive watches, featuring an iconic design and Master Chronometer performance.

Condition: Used with honest wear, could benefit from a light polish to look like new
Case size: 42mm diameter
Water resistance: 300m depth rating

Posted at

Jan 18, 2026, 6:43 PM

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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 White Dial – Ref. 210.32.42.20.04.001 (2021) – Full Set – $4,700

Omega - 210.32.42.20.04.001 · $4,700

This Omega Seamaster Diver 300M features a white dial and was produced in 2021.

Year: 2021

Posted at

Jan 28, 2026, 5:38 PM

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Omega Seamaster Diver 300m White Dial on Bracelet 210.30.42.20.04.001 Full Kit

Omega - 210.30.42.20.04.001 · $3,950

This 2021 Omega Seamaster Professional Diver 300M features a white dial on a bracelet, coming with various accessories and documentation. The original owner purchased it from an authorized dealer in Texas and has taken good care of the watch.

Condition: Excellent/very good
Year: 2021
Ownership: Original owner

Posted at

Jan 28, 2026, 5:14 PM

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Omega Seamaster Diver 300M - 41mm Ceramic Blue - No Wave - Complete Set

Omega - 212.30.41.20.03.001 · $3,200

This Omega Seamaster Diver 300M Co-Axial Chronometer features a 41mm stainless steel case, blue ceramic bezel, and flat/lacquered blue dial with an understated look. It has an Omega Co-Axial calibre 2500 automatic movement and is rated to 300 m of water resistance.

Condition: Excellent
Case size: 41mm diameter
Movement: Omega Co-Axial calibre 2500 automatic movement
Water resistance: 300m depth rating

Posted at

Jan 28, 2026, 4:46 PM

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2025 OMEGA Seamaster Diver 300M 42mm Green Dial “SEAWEED” 210.30.42.20.10.001

OMEGA - 210.30.42.20.10.001 · $4,700

A 2025 OMEGA Seamaster Diver 300M in a 42mm Green Dial "SEAWEED" configuration, featuring an Omega 8800 movement and various accessories.

Condition: Excellent, light signs of wear
Movement: Omega 8800

Posted at

Jan 28, 2026, 4:37 PM

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OMEGA Seamaster Diver 300M 42mm White Dial 210.30.42.20.04.001 | Full Set

OMEGA - 210.30.42.20.04.001 · $4,500

A 2020 OMEGA Seamaster Diver 300M with a white dial, 42mm case size, and excellent timekeeping performance.

Condition: Outstanding condition, with only a few faint hairline marks on the bracelet from light wear.
Movement: Omega 8800
Bracelet size: 8.25 inches, will fit wrists up to approximately 8.25"
Box condition: [object Object]

Posted at

Jan 28, 2026, 4:24 PM

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2025 Omega Seamaster Diver 300m Green Dial on Bracelet 210.30.42.20.10.001 B+P

Omega - 210.30.42.20.10.001 · $4,900

The Omega Seamaster Diver 300M reference number 210.30.42.20.10.001 features a stunning green wave-pattern dial paired with a green ceramic bezel, a 42 mm case diameter, and exceptional precision thanks to its Co-Axial Master Chronometer Caliber 8800 movement.

Condition: Excellent
Diameter: 42mm
Movement: Self-winding Mechanical
Bezel material: Green Ceramic

Posted at

Jan 28, 2026, 10:19 AM

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