Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet

Reference 234.30.41.21.03.002

Omega Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet

About this watch

The Omega Seamaster 300 Master Chronometer 234.30.41.21.03.002 is a masterpiece of luxury watchmaking, boasting a stunning Summer Blue gradient dial that exudes freshness and vibrancy. The round case measures 41.00 mm in diameter and 13.85 mm in height, striking a perfect balance between masculinity and elegance. Crafted from high-grade stainless steel and featuring a ceramic bezel, this watch is built to withstand the rigors of underwater adventures as well as everyday wear. The sapphire crystal provides scratch resistance and clarity that's hard to beat. With its impressive 300 meters of water resistance, this timepiece is a reliable companion for serious divers and water sports enthusiasts alike. At the heart of this masterpiece lies the Omega caliber 8912, an automatic movement that ensures accuracy and reliability with a 60-hour power reserve and a frequency of 25,200 vibrations per hour. METAS-certified, it meets the highest standards of precision and performance. The mixed indexes and arrow hands ensure readability at a glance, even in low light conditions. Whether you're diving into the ocean or diving into your daily routine, this watch is a reliable companion that can handle it all.

Buy Now on Jomashop

This is an affiliate link

MSRP: $7,400

Market Price: $5,510

Key Features

Striking Summer Blue gradient dial
Robust and durable materials (stainless steel, ceramic bezel)
High water resistance (300m)
METAS-certified movement for accuracy
Versatile for both casual and formal wear

Specifications

Brand

Omega

Family

Seamaster 300

Model

Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet

Reference

234.30.41.21.03.002

Movement

8912

Movement Features

Hours, Minutes, Seconds
Chronometer, Co-Axial Escapement

Case

41mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

300

Current Listings

Omega Seamaster Summer Blue anniversary Edition (Excellent condition, full kit!) $4999

Omega - 234.30.41.21.03.002 · $4,999

The Omega Seamaster Summer Blue anniversary Edition is a classic dive watch with a multi versatile beautiful blue dial, anniversary edition and iconic caseback.

Condition: Excellent condition
Diameter: 41mm
Water resistance: 300m
Movement: 8912 Co-Axial movement

Posted at

Dec 16, 2025, 11:26 PM

Active

View listing on r/WatchExchange

Omega Seamaster 300 Master Co-Axial – 41mm “Retro” – 233.30.41.21.01.001 – $3,199 Shipped (Price Reduced!)

Omega - 233.30.41.21.01.001 · $3,199

This Omega Seamaster 300 Master Co-Axial features a 41mm stainless steel case, black dial with vintage-tone lume, and a ceramic bezel with 300m water resistance. It's powered by an anti-magnetic movement.

Condition: Excellent overall with minor surface scuffs and light wear
Case size: 41mm diameter
Water resistance: 300m depth rating
Movement type: Cal. 8400

Posted at

Dec 18, 2025, 7:56 PM

Active

View listing on r/WatchExchange

Omega Seamaster 300 Co-Axial Master Chronometer 41 mm (Ref. 234.30.41.21.01.001) — $4,650 shipped CONUS

Omega - 234.30.41.21.01.001 · $4,650

This Omega Seamaster 300 Co-Axial Master Chronometer features a 41mm stainless steel case, black sandwich dial with vintage-tone lume, and ceramic bezel. It has a METAS certified Cal. 8912 movement with 60-hour power reserve, 15,000-gauss magnetic resistance, and 300m water resistance.

Condition: Excellent overall condition, one small scuff on the side of the case
Case size: 41mm diameter
Water resistance: 300m depth rating
Movement: Omega Co-Axial Master Chronometer Cal. 8912

Posted at

Dec 18, 2025, 11:04 AM

Active

View listing on r/WatchExchange

Omega Seamaster 300M Co-Axial Mid-size 2220.80 - $2,800 - Reserved post for u/agrem19

Omega - 2220.80 · $2,800

Up for sale is my Omega Seamaster 2220.80, a mid-size automatic co-axial cal 2500 movement watch measuring 41mm in diameter.

Condition: Good condition with minimal marks and hairlines on the case, caseback, and bezel insert
Movement type: Automatic Co-Axial Cal 2500
Bracelet size range: 7-7.25 inches (depending on wrist shape)
Shipping method: Fedex Priority Shipping from the Philippines

Posted at

Dec 17, 2025, 9:30 PM

Active

View listing on r/WatchExchange

Omega Seamaster 300M Co-Axial Mid-size 36mm 2222.80 - $2,290

Omega - 2222.80 · $2,290

The Omega Seamaster 300M Co-Axial Mid-size is a 36mm automatic watch featuring the co-axial cal 2500 movement. It has a steel case, original Omega steel bracelet, and sapphire crystal.

Condition: 8.9/10 - great condition with minimal marks
Movement: Co-Axial Cal 2500
Bracelet size: fits up to 7-7.25 inch wrists
Shipping: Fedex Priority Shipping from Philippines with 3-5 days global delivery time

Posted at

Dec 17, 2025, 8:46 PM

Active

View listing on r/WatchExchange

Omega Seamaster 300M Ref. 212.30.41.20.01.005 – “James Bond 41mm” – LE 10059/11007 – Watch + Cards 💥 – $3,999 Shipped

Omega - 212.30.41.20.01.005 · $3,999

The Omega Seamaster Diver 300M James Bond Limited Edition is a numbered limited run iconic Bond reference, featuring a 41mm stainless steel case and Co-Axial Chronometer movement. It has a black 007 dial, display caseback with 'James Bond 50 Years' rotor, and 300m water resistance.

Condition: Very good overall with normal wear
Case size: 41mm
Water resistance: 300m
Movement: Co-Axial Chronometer

Posted at

Dec 15, 2025, 9:55 PM

Active

View listing on r/WatchExchange

Omega Seamaster 300 41mm Titanium on Titanium Ref. 233.90.41.21.03.001 (2022) - Pre-Owned Good Condition w/ Box & Papers

Omega - 233.90.41.21.03.001 · $5,500

The Omega Seamaster 300 is a lightweight titanium diver's watch with a striking blue dial and 41mm case, built for adventure yet refined for everyday wear.

Condition: Pre-Owned good condition
Case Diameter: 41mm
Movement: Automatic, Calibre 8400
Water Resistance: 30 ATM

Posted at

Dec 15, 2025, 6:59 PM

Active

View listing on r/WatchExchange