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.

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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 300M Co-Axial Mid-size 2220.80 Box and Card - $2,850 - Reserved for u/hachoopoo

Omega - 2220.80 · $2,850

A mid-size Omega Seamaster 300M Co-Axial watch with a 41mm steel case and automatic co-axial cal 2500 movement. The watch features a sapphire crystal and comes with an original Omega steel bracelet.

Condition: Excellent condition with minimal marks/hairlines
Case size: 41mm diameter
Movement: automatic co-axial cal 2500
Bracelet length: fits up to 7-7.25 inch wrists depending on wrist shape

Posted at

Jan 13, 2026, 11:01 PM

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Omega Seamaster 300 Steel Pumpkin Patina Lollipop Hand (Unpolished/Serviced)

Omega - 300 · $10,500

Condition: unpolished/serviced
Case material: steel
Patina type: pumpkin

Posted at

Jan 13, 2026, 5:20 PM

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Omega Seamaster 300M "Seaweed" Green Wave Dial on OEM Mesh! 210.32.42.20.10.001

Omega - 210.32.42.20.10.001 · $5,395

The Omega Seamaster Diver 300M 'Seaweed' features a rare and striking color combination, powered by the Caliber 8800 movement and water-resistant up to 300 meters.

Condition: Excellent preowned condition
Movement: Caliber 8800
Power reserve: up to 55 hours
Water resistance: up to 300 meters

Posted at

Jan 13, 2026, 11:31 AM

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Omega Seamaster 300 Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

Omega - 234.30.41.21.01.001 · $6,845

The Omega Seamaster 300 Heritage is a classic dive watch with a rich, glossy black dial and a steel case that feels timeless and refined.

Condition: Excellent
Case material: steel
Bracelet type: matching bracelet
Included kit: outer box, inner box, operating instructions, extra strap, card holder, warranty card, master chronometer card and pictograms card

Posted at

Jan 12, 2026, 6:48 PM

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Omega Seamaster 300M Co-Axial Mid-size 2220.80 Box and Card - $2,850

Omega - 2220.80 · $2,850

Up for sale is my Omega Seamaster 2220.80, a mid-size watch featuring an automatic co-axial cal 2500 movement.

Condition: 8.7/10 - great condition with minimal marks and hairlines
Case size: 41mm diameter
Movement: co-axial cal 2500
Bracelet fit: up to 7-7.25 inch wrists depending on wrist shape

Posted at

Jan 7, 2026, 7:54 PM

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Omega Seamaster 300 Professional 41mm Flat Black Dial $3920

Omega - 300 Professional · $3,920

A Omega Seamaster 300 Professional watch with a flat black dial.

Diameter: 41mm

Posted at

Jan 6, 2026, 9:31 AM

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Omega Seamaster 300M Co-Axial Mid-size 2220.80 Full Kit - $2,900 - Reserved post for u/whitekimchee

Omega - 2220.80 · $2,900

Up for sale is my Omega Seamaster 2220.80, a mid-size automatic co-axial cal 2500 movement watch that measures at 41mm.

Condition: 8.7/10 - great condition with minimal marks/hairlines
Movement: automatic co-axial cal 2500
Case size: 41mm diameter
Bracelet size: up to 7-7.25 inch wrists with all links included

Posted at

Jan 5, 2026, 9:49 PM

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Omega Seamaster 300Heritage Co-Axial Chronometer 234.30.41.21.01.001 Complete Set

Omega - 234.30.41.21.01.001 · $6,845

The Omega Seamaster 300 Heritage has a black dial with broad arrow hands and warm toned lume, giving it a classic dive watch look. The steel case has sharp lines and a confident shine, paired with a matching bracelet that makes it feel solid and balanced.

Condition: Excellent
Case material: steel
Bracelet type: matching

Posted at

Jan 4, 2026, 4:52 PM

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