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 20mm Steel Bracelet - STZ010108 ( excellent )
This excellent condition Omega Seamaster 300M Stainless Steel Bracelet is a 20mm accessory that fits 42mm Seamaster 300M watches and other 20mm Omega models. It has been well-maintained and presents as new.
- Condition: Excellent
- Lug Width: 20mm
- Trade Policy: We are cash buyers and will consider all modern trades

Omega OEM Seamaster 300M Black Diver Strap and Deployant Clasp ( excellent )
This is an OEM Omega Black Rubber Strap & Deployant Clasp for the Seamaster 300M Wave Dial, a high-quality accessory for watch enthusiasts.
- Condition: Excellent
- Material: Rubber
- Strap Width: 20mm
- Clasp Width: 18mm
![[WTS] Omega Seamaster 300m White dial w](https://preview.redd.it/u1znf4rb67ye1.jpg?width=640&crop=smart&auto=webp&s=b620b03463a710e1386b88e38a0d0decc8a59dac)
Omega Seamaster 300m White dial w
A 42mm Omega Seamaster white dial watch with original metal bracelet and additional straps. The watch is fully functioning and in excellent condition.
![[WTS] 2019 Omega Seamaster 300M Chrono GMT 44MM Full Set](https://preview.redd.it/6katob7p37ye1.jpg?width=640&crop=smart&auto=webp&s=1089f69424223044139def84195771df63530882)
2019 Omega Seamaster 300M Chrono GMT 44MM Full Set
For sale is a 2019 Omega Seamaster SMP 300M 44MM GMT in excellent condition, featuring a GMT function and chronograph. The watch has an automatic CoAxial Calibre movement with a sapphire crystal.
- Condition: Excellent Condition
- Year Of Manufacture: 2019
- Case Size: 44mm diameter
![Omega Seamaster 300M Ceramic “Black Black” 210.92.44.20.01.003 [WTS]](https://preview.redd.it/fhzktj9g50ye1.jpg?width=640&crop=smart&auto=webp&s=aa53f4c7102b79466aedf907e69abeb314ded971)
Omega Seamaster 300M Ceramic “Black Black” 210.92.44.20.01.003
This Omega Seamaster 300M Ceramic is a sleek 'Black Black' model with a ceramic case and a range of features.
- Condition: Like new with no scratches or signs of wear
- Purchase Price: 6350
![[WTS][US] Omega Seamaster 300 Heritage - 41mm - Black Dial - 234.30.41.21.01.001 - Full Set](https://preview.redd.it/o9n9s9wdurxe1.jpg?width=640&crop=smart&auto=webp&s=8b2ef837f9c18a072d8b1af8e4287585ee5cd211)
[US] Omega Seamaster 300 Heritage - 41mm - Black Dial - 234.30.41.21.01.001 - Full Set
This Omega Seamaster 300 Heritage is a mechanical watch with a black dial and 41mm case size.
- Condition: Fantastic, minor hairlines on case
- Case Size: 41mm diameter
- Dial Color: Black

Omega Seamaster 300M - Black Aluminum - 210.30.42.20.01.010 ( new / 2025 )
This Omega Seamaster 300M features a 42mm stainless steel case with a black aluminum dial and bezel on mesh bracelet, powered by the 8806 Master Co-Axial movement.
- Condition: Brand New / Complete Set
- Case size: 42mm
- Movement type: 8806 Master Co-Axial
![[WTS] Omega Seamaster 300M White Dial on Rubber - Full Set + Original Receipt (2022)](https://preview.redd.it/nvkou84lukxe1.jpg?width=640&crop=smart&auto=webp&s=e641a57392a9b3456ee56147c0f0c3cd53ad71ee)
Omega Seamaster 300M White Dial on Rubber - Full Set + Original Receipt (2022)
Up for sale is my Omega Seamaster Diver 300M Co-Axial Master Chronometer with a white ceramic wave dial and black ceramic bezel, mounted on the Omega OEM black rubber strap. It features a 42mm case size, Omega Caliber 8800 movement, METAS certified, and has a water resistance of 300M.
- Condition: Very clean, minimal if any careful wear.
- Case Size: 42mm
- Water Resistance: 300M
- Movement: Omega Caliber 8800 (Co-Axial Master Chronometer)