Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Summer Blue / Bracelet
Reference 234.30.41.21.03.002
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.
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 300 Summer Blue Edition Ref 234.30.41.21.03.002
This Omega Seamaster 300 Summer Blue Edition is a highly sought-after model, part of the popular Summer Blue line released in recent years.
- Condition: great shape
- Includes: watch, outer box, inner box, operations manual, pictogram, master chronometer, warranty cards, extra links
- Shipping: overnight, fully insured with signature required
![[WTS] Omega Seamaster 300M Ceramic Black Black $6100](https://external-preview.redd.it/xQdUGxk0Y-zKL7qXX1ZJY_iV6FbZJhkA8etpmR9sDqY.jpeg?auto=webp&s=4a2e25746d3fff42e47ae71a91e3564310ea891c)
Omega Seamaster 300M Ceramic Black Black $6100
A black ceramic Omega Seamaster 300M with a domed scratch-resistant sapphire crystal and anti-reflective treatment on both sides. It features a self-winding movement with a power reserve of 55 hours.
- Condition: Incredible condition, no scratches or signs of wear
- Case size: 40mm diameter
- Water resistance: 300m / 1000 feet
- Movement caliber: Omega 8806
![[WTS] Omega Seamaster 300M Ceramic “Black Black” $6100](https://external-preview.redd.it/xQdUGxk0Y-zKL7qXX1ZJY_iV6FbZJhkA8etpmR9sDqY.jpeg?auto=webp&s=4a2e25746d3fff42e47ae71a91e3564310ea891c)
Omega Seamaster 300M Ceramic “Black Black” $6100
a luxury watch for sale with additional details provided
- Price: $6100
![[WTS] 1969 Omega Seamaster 300 (Ref. 165.024) W BOX & *OMEGA REFURBISHED*](https://preview.redd.it/1xglq27x2a8f1.jpeg?auto=webp&s=da552768eb8d7093446c59b0ba030776e77be892)
1969 Omega Seamaster 300 (Ref. 165.024) W BOX & *OMEGA REFURBISHED*
1969 Omega Seamaster 300 produced by Centrale Boîtes, refurbished at Omega, comes with Omega authentication document and new 'old style' Omega box.
- Condition: Very good, with slight aging of hands and dial
- Calibre: 550
- Case size: 42mm
- Case maker: Centrale Boîtes (CB)
![[WTS] Omega Seamaster 300 Heritage (ceramic)](https://external-preview.redd.it/2Z9a42pNErEqHUbNKPJqovBLpxTTbJAMpWVLnL79YVQ.jpeg?auto=webp&s=07d44a5f7c324f12ca842cb8d774dd229c74b6fe)
Omega Seamaster 300 Heritage (ceramic)
A ceramic Omega Seamaster 300 Heritage with a matte black dial, stainless steel case, and 41mm diameter. It features a domed sapphire crystal, vintage-style Super-LumiNova lume, and a stainless steel bracelet.
- Condition: Excellent—light desk-wear on clasp; no dings or deep scratches
- Movement: Omega Master Co-Axial Calibre 8400
- Bezel: Ceramic
- Case material: Stainless steel

Omega Seamaster 300 2531.80
This Omega Seamaster 300 is a great daily wear option, with no stretch in the bracelet and a comfortable fit for wrists sized about 7.25 inches.
- Condition: Great condition, some wear on bezel insert and small ding on end link
- Bracelet size: 7.25 inches
- Number of links: 4 removable links total
![[WTS] Omega Seamaster 300 2531.80](https://external-preview.redd.it/U8VC8NIHC9pZDWw84TRs2Rp7lqdkMjG91hgZA1DhlC8.png?auto=webp&s=3277e5598c79e1b5e1ff576899edb1180ad981b7)
Omega Seamaster 300 2531.80
A daily-wearable Omega Seamaster 300 in great condition, with a 7.25" wrist size and no stretch in the bracelet.
![[WTS] Omega Seamaster 300M - Blue - $4000 Shipped](https://external-preview.redd.it/VWL_aB0BhKP9Y3JiAl7AdTmkpVGBUQC8qixjujDrZuc.jpeg?auto=webp&s=f3004e5fecadd1e5af1ca30aed06613c38fcf4bc)
Omega Seamaster 300M - Blue - $4000 Shipped
A one-year-old Omega Seamaster 300M in blue, purchased new from Jomashop and showing some wear. The watch has been well-maintained with a replaced pin & buckle strap and an included Omega Nato Strap. Additional straps and accessories are available for separate purchase.
- Condition: Moderate signs of desk diving marks, no major nicks or dents
- Strap: Omega Rubber strap with Deployant Clasp
- Included extras: Omega Nato Strap, optional bracelet and black leather strap

Pre-Owned Omega Seamaster 300 233.32.41.21.01.002
This pre-owned Omega Seamaster 300 is a black dial watch with automatic movement, 41mm stainless steel case, water resistance of 300 meters, and brown leather strap.
- Condition: 94% condition due to faint marks on the bezel and throughout the case, minor creasing and faint marks on the clasp
- Case size: 41mm diameter
- Material: Stainless Steel
- Dial color: Black