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

Reference 210.30.42.20.03.003

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

About this watch

The Omega Seamaster Diver 300M Master Co-Axial 42 is a masterpiece of engineering and design, blending elegance with robust functionality. Its stunning summer blue dial features a gradient finish, adding depth and character to the watch face. The case is crafted from stainless steel and ceramic, built to withstand underwater adventures. A rotating bezel allows for accurate dive time tracking, and a water resistance of up to 300 meters ensures it can endure ocean depths. At its heart lies the Omega caliber 8800 movement, a marvel of engineering with Co-Axial escapement, reducing friction and enhancing longevity and accuracy. Rigorously tested according to Master Chronometer certification, this watch is resistant to magnetic fields reaching 15,000 gauss and has a power reserve of 55 hours. The Seamaster Diver 300M comes with a stainless steel bracelet that complements the watch's aesthetics while providing a comfortable fit. Its versatility makes it suitable for various environments, from diving to formal events.

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MSRP: $6,300

Market Price: $4,986

Key Features

Stainless Steel and Ceramic Case
Summer Blue Gradient Dial
Omega Caliber 8800 Movement
300m Water Resistance
Co-Axial Escapement
Master Chronometer Certified
55 Hour Power Reserve

Specifications

Brand

Omega

Family

Seamaster Diver 300m

Model

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

Reference

210.30.42.20.03.003

Movement

8800

Movement Features

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

Case

42mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

2024 Omega Seamaster Diver 300M 210.30.42.20.10.001 Green Seaweed Full Set - $5,395

Omega - 210.30.42.20.10.001 · $5,395

This Omega Seamaster Diver 300M is a 2024 model featuring a Green Seaweed design. It's in excellent condition and thoroughly tested on a timegrapher.

Condition: Excellent condition with minimal signs of wear
Year: 2024
Box Contents: Watch,Inner & Outer Box,Card Holder,International Warranty Card,Pictograms Card,Master Chronometer Card,Instructions Manual
Shipping Insurance: fully insured

Posted at

May 7, 2026, 11:53 AM

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Omega Seamaster Diver 300M White Dial-2023

Omega - 210.30.42.20.04.001 · $4,350

This Omega Seamaster Diver 300M features a white dial and comes with various accessories including inner box, warranty card, and two aftermarket straps.

Condition: Excellent condition
Bracelet size: approximately 7.5 inches
Clasp type: Omega micro-adjust clasp

Posted at

May 7, 2026, 11:36 AM

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[US] Omega Seamaster Diver 300m - Blue Dial - 41mm - 212.30.41.20.03.001 - Full Set

Omega - 212.30.41.20.03.001 · $3,550

Up for sale is an Omega Seamaster Diver 300m - Blue Dial - 41mm - Full Set Watch functions perfectly mechanically, without issue.

Condition: Fantastic with minor hairlines
Case size: 41mm diameter
Water resistance: 300m depth rating

Posted at

May 6, 2026, 3:48 PM

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Omega Seamaster Diver 300M Black Ceramic & Sedna Gold 210.62.44.20.01.001

Omega - 210.62.44.20.01.001

Material: Ceramic and Sedna Gold

Posted at

May 6, 2026, 1:47 PM

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OMEGA Seamaster Diver 300M Chronograph Grey Dial 210.30.44.51.06.001

OMEGA - 210.30.44.51.06.001 · $6,295

The Omega Seamaster Diver 300M Chronograph features a 44mm stainless steel case and combines the classic 300M dive-watch design with a Master Chronometer chronograph movement.

Condition: Excellent pre-owned condition
Case size: 44mm
Movement rating: Master Chronometer

Posted at

May 5, 2026, 8:37 PM

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Omega Seamaster Diver 300M 42mm 210.32.42.20.01.001 | No Box/Papers | Verified Authentic | $3,900

Omega - 210.32.42.20.01.001 · $3,900

This Omega Seamaster Diver 300M features a 42mm stainless steel case, black wave dial, and black ceramic bezel.

Condition: Excellent overall
Case size: 42mm diameter
Dial color: Black
Bezel material: Ceramic

Posted at

May 5, 2026, 3:19 PM

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Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2018

Omega - 212.30.41.20.01.003 · $3,377

This Omega Seamaster Diver features a black no wave dial and is in excellent condition with minimal signs of wear.

Condition: Excellent, minimal signs of wear
Case size: 41mm
Depth rating: 300m

Posted at

May 5, 2026, 2:18 PM

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Omega Seamaster Diver 300M "No Time To Die" (NTTD) 007 Edition - 210.92.42.20.01.001 - Excellent Condition

Omega - 210.92.42.20.01.001 · $42,000

This listing is for an Omega Seamaster Diver 300M 'No Time To Die' (NTTD) 007 Edition, a limited edition watch.

Condition: Excellent Condition
Album: https://imgur.com/a/Ngf92ot

Posted at

May 5, 2026, 1:35 PM

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OMEGA Seamaster Diver 300M Nekton Edition - Full Set - 210.30.42.20.01.002

OMEGA - 210.30.42.20.01.002 · $4,750

This stylish timepiece features a sleek silver case with a unidirectional rotating bezel, a black dial with ocean wave pattern and baton indexes, and a water resistance of 300 meters.

Condition: great, minimal signs of wear
Case size: 42mm diameter
Movement type: Swiss-made mechanical (automatic)
Water resistance: 300m depth rating

Posted at

May 4, 2026, 6:41 PM

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