Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet
Reference 234.30.41.21.03.001
About this watch
The Omega Seamaster 300 Master Chronometer, reference 234.30.41.21.03.001, is a stunning example of craftsmanship and precision fused into a timepiece. Its striking blue dial, crafted from high-quality stainless steel, exudes durability and elegance. The watch seamlessly transitions between casual and formal settings, making it suitable for both everyday wear and special occasions. At the core of the Seamaster 300 lies the automatic Omega Caliber 8912, featuring a chronometer and co-axial escapement for exceptional accuracy and reliability. This movement is built to last, with 38 jewels and a 60-hour power reserve. The watch's impressive water resistance of 300 meters ensures it can withstand even the most demanding underwater adventures. The Omega Seamaster 300 Master Chronometer is not just a timepiece; it's a celebration of craftsmanship, innovation, and style. Its rich history, modern features, and breathtaking design make it an investment that any watch enthusiast would be proud to own.
Key Features
- Automatic Omega Caliber 8912 movement
- 300 meters water resistance
- 41mm stainless steel case diameter
- 38 jewels for exceptional accuracy
- 60-hour power reserve for reliability
- Co-axial escapement for reduced friction and increased accuracy
- Chronometer certification for precision and reliability
Specifications
- Brand
- Omega
- Family
- Seamaster 300
- Model
- Seamaster 300 Master Chronometer Stainless Steel / Blue / Bracelet
- Reference
- 234.30.41.21.03.001
- 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 - 210.32.42.20.03.001
This Omega Seamaster 300M is a high-end diving watch with a 42mm case size and 300m water resistance rating. It features a very good condition, minor-wear-only case with perfect front and back sapphire crystals.
- Condition: Very good condition
- Case Size: 42mm
- Water Resistance Rating: 300m (1000 ft.)
- Depth Rating: 300m depth rating

Omega Seamaster 300M - Summer Blue - 42mm - 210.30.42.20.03.003 ( mint )
Up for sale is a mint condition Omega Seamaster 300M 42mm Summer Blue Dial on Bracelet, complete with all boxes, papers, booklets, hang tag and Omega Warranty Card.
- Condition: Mint Condition
- Case size: 42mm
- Movement type: 8800 Master Co-Axial
- Shipping cost international: 150

Omega Seamaster 300M Black Black - Diver - 210.92.44.20.01.003 ( mint )
This Omega Seamaster 300 is a black ceramic diver's watch with a wave dial, featuring a 43.5mm case and the Master Co-Axial movement. It comes with all original boxes and papers.
- Condition: Mint Condition
- Case material: Black Ceramic
- Movement: 8806 Master Co-Axial Movement
- Size: 43.5mm diameter

2023 Omega Seamaster 300m Ref: 210.32.42.20.10.001 Green Dial "Seaweed" w/ B+P
This 2023 Omega Seamaster 300m features a 42mm case, green ceramic bezel, and a green wave dial with Luminova markers.
- Condition: Excellent with light wear
- Case size: 42mm diameter
- Serial number: A,1XX,XXX
- Accessories: inner and outer boxes, warranty cards, card holder, receipt, booklet

LNIB Omega Seamaster 300 Heritage Black 41mm Steel Bracelet 2017 Complete
A 2017 Omega Seamaster 300 Heritage in black with a 41mm steel bracelet and liquidmetal bezel, featuring the Caliber 8840 self-winding movement.
- Condition: Like New (LNIB)
- Movement caliber: 8840
- Bracelet material: steel

LNIB Omega Seamaster 300 Pro 43.5mm Ceramic Case Rubber Strap 2022 Complete
A 2022 Omega Seamaster 300 Professional diver's watch with a ceramic/titanium case and rubber strap, featuring a Master Chronometer Omega Caliber 8806.
- Condition: Like New Condition
- Case material: Ceramic/Titanium
- Case diameter: 43.5mm
- Band type: Rubber Strap

2023 Omega Seamaster 300m Ref: 210.32.42.20.10.001 Green Dial "Seaweed" w/ B+P
2023 Omega Seamaster 300m Ref: 210.32.42.20.10.001 Green Dial 'Seaweed' is a 42mm dive watch with excellent condition green ceramic bezel and Luminova markers.
- Condition: Excellent with minor wear
- Case size: 42mm
- Serial number: A,1XX,XXX
- Accessories included: inner and outer boxes, warranty cards, card holder, receipt, booklet

Omega Seamaster 300M - Blue Dial - 210.30.42.20.03.001 (excellent / complete)
This Omega Seamaster 300M features a 42mm stainless steel case with a blue dial and bezel, powered by the Master Co-Axial Movement.
- Condition: Excellent / Complete Set
- Case size: 42mm diameter
- Movement type: Master Co-Axial

LNIB Omega Seamaster 300 Pro 43.5mm Ceramic Case Rubber Strap 2022 Complete
2022 Omega Seamaster 300 Professional with ceramic/titanium case, rubber strap, and Master Chronometer Caliber 8806 movement.
- Condition: Like New Condition
- Case Material: Ceramic/Titanium
- Case Size: 43.5mm diameter