Omega Seamaster 300 Seamaster 300 Master Chronometer Stainless Steel / Black / Bracelet
Reference 234.30.41.21.01.001
About this watch
The Omega Seamaster 300 Master Chronometer is a luxurious timepiece that embodies the spirit of adventure while delivering peak performance. Its stunning black dial, mixed indexes, and arrow-shaped hands create a sophisticated look that's perfect for formal or casual settings. The sapphire crystal glass provides excellent clarity, and the open case back showcases Omega's craftsmanship. This watch is built to withstand diving conditions with its robust stainless steel bracelet and 300-meter water resistance. At its core beats the Omega caliber 8912, an automatic movement featuring a Co-Axial escapement that minimizes friction, enhancing precision and reliability. The Seamaster 300 Master Chronometer is a certified chronometer that promises reliability, making it a worthy companion for years to come.
Key Features
- 41mm Round Case
- Stainless Steel Bracelet with 21mm Lug Width
- Sapphire Crystal Glass
- Omega Caliber 8912 Automatic Movement
- Co-Axial Escapement and METAS Certification
- 300-Meter Water Resistance
Specifications
- Brand
- Omega
- Family
- Seamaster 300
- Model
- Seamaster 300 Master Chronometer Stainless Steel / Black / Bracelet
- Reference
- 234.30.41.21.01.001
- Movement
- 8912
- Movement Features
-
- Hours, Minutes, Seconds
- Chronometer, Co-Axial Escapement
- Case
- 41mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 300
Current Listings

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

LNIB Omega Seamaster 300 Heritage Black 41mm Steel Bracelet 2017 Complete
This Omega Seamaster 300 Heritage features a 41mm steel case, Liquidmetal bezel, and self-winding movement. It comes with a full set of accessories, including manuals and certificates.
- Condition: Like New In Box (LNIB)
- Movement: Caliber 8840
- Bracelet size: Steel bracelet

Omega Seamaster 300M - Black Aluminum - 210.32.42.20.01.003 ( new / 2025 )
This Omega Seamaster 300 is a brand new watch featuring a 42mm stainless steel case and black aluminum dial.
- Condition: Brand new
- Case Size: 42mm diameter
- Movement: 8806 Master Co-Axial Movement

Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( new / 2024 )
This Omega Seamaster 300 Heritage is a brand new 41mm stainless steel watch with a blue dial, accompanied by all original boxes, papers, and warranty card.
- Condition: Brand new
- Case size: 41mm diameter
- Movement: 8912 Master Co-Axial

Omega Seamaster 300 Heritage - Blue - 234.30.41.21.03.001 ( excellent )
Up for sale is an excellent condition Omega Seamaster 300 Heritage 41mm Blue Dial reference # 234.30.41.21.03.001 It comes complete with all boxes, papers, booklets, hang tag and Omega Warranty Card dated January 2023.
- Condition: Excellent
- Case size: 41mm
- Movement: Master Co-Axial Movement

LNIB Omega Seamaster 300 Pro 43.5mm Ceramic Case Rubber Strap 2022 Complete!
A 2022 Omega Seamaster 300 Professional with a ceramic/titanium case and rubber strap, featuring the Master Chronometer Omega Caliber 8806.
- Condition: Like New In Box (LNIB)
- Case material: Ceramic/Titanium
- Strap material: Rubber

LNIB Omega Seamaster 300 Heritage Black 41mm Steel Bracelet 2017 Complete
This Omega Seamaster 300 Heritage is a 41mm steel bracelet watch with a Liquidmetal Bezel, featuring an Omega Caliber 8840 self-winding movement and dated April 2017.
- Condition: Like New
- Movement: Omega Caliber 8840 self-winding
- Shipping: International Fedex Express Shipping (3 Days)
- Reference available: Multiple references available