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. Box, Cards. 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,750

A Omega Seamaster 300m with box and cards is being sold.

Box: yes
Cards: yes

Posted at

Apr 11, 2026, 11:03 AM

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Omega Seamaster 300M Two-Tone White Wave – Full Size Automatic (Rare Config) – $3,200

Omega - 300M Two-Tone White Wave · $3,200

This Omega Seamaster 300M features a full-size ~41mm case, white wave dial, and two-tone steel + yellow gold. It is an early 90s model, running well and in great condition.

Condition: Running well, with light wear consistent with age
Case size: ~41mm
Movement: cal. 1109 Automatic

Posted at

Apr 10, 2026, 9:37 PM

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Omega Seamaster 300M

Omega - Seamaster 300M · $4,500

This Omega Seamaster Diver 300M is a 42mm 2019 model that keeps good time, accompanied by its full box and papers. It includes both the bracelet and an Omega rubber strap.

Condition: Pre-owned with normal wear
Case size: 42mm diameter
Water resistance: 300m depth rating

Posted at

Apr 8, 2026, 7:15 PM

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Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )

Omega - 210.30.42.20.01.018 · $6,450

This Omega Seamaster 300 is a brand new, Master Chronometer-certified watch featuring a 42mm stainless steel case and orange accents on a mesh bracelet.

Condition: Brand new
Case size: 42mm diameter
Movement: 8806 Master Co-Axial

Posted at

Apr 8, 2026, 12:18 PM

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Omega Seamaster 300M Black / Orange Diver 210.32.42.20.01.006 ( new / 2025 / box and papers )

Omega - 210.32.42.20.01.006 · $6,250

This Omega Seamaster 300M Black / Orange Diver features a 42mm stainless steel case with an orange rubber strap and a black & orange dial. It comes complete with all boxes, papers, and booklet.

Condition: Brand new
Case size: 42mm diameter
Movement: 8806 Master Co-Axial

Posted at

Apr 8, 2026, 12:14 PM

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Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )

Omega - 210.30.42.20.01.001 · $5,450

This Omega Seamaster 300 is a brand new 42mm stainless steel watch with a black dial and bezel on a bracelet, complete with all original boxes, papers, and warranty.

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

Posted at

Apr 8, 2026, 12:10 PM

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BNIB Omega Seamaster 300 ONLY $10k!

Omega - 210.60.42.20.99.001 · $10,000

A Brand new Omega Seamaster 300 is being listed for sale.

Condition: Brand new, full set
Rrp: $17.2k plus tax

Posted at

Apr 7, 2026, 4:32 PM

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Omega Seamaster 300 Heritage - Mint Condition + 2 new straps

Omega - 234.30.41.21.03.001 · $4,800

The Omega Seamaster 300 Heritage reference 234.30.41.21.03.001 is a modern reissue of Omega's classic dive watch with a beautiful blue sandwich dial and vintage-inspired design. It blends vintage aesthetics with Omega's modern Master Chronometer movement and METAS certification, making it one of the most compelling heritage divers on the market. The watch comes as a full set, still under Omega factory warranty.

Condition: Near Mint
Case diameter: 41mm
Movement type: Omega Master Chronometer automatic movement (Calibre 8912)
Certification: METAS certified Master Chronometer

Posted at

Apr 7, 2026, 12:18 PM

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