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
![[WTS] 1968 Omega Seamaster 300 166.024 Restored (WatchCo Style)](https://preview.redd.it/yqgwcllwcvug1.jpg?width=640&crop=smart&auto=webp&s=2be4b274fed4ea5f78b77510d93c65e44d78a059)
1968 Omega Seamaster 300 166.024 Restored (WatchCo Style)
A 1968 Omega Seamaster 300 Ref. 166.024 that has been restored to its original glory, featuring a striking resemblance to the Watchco Seamaster but with a better pedigree.
- Condition: Restored
- Bracelet: 1116 (predecessor to modern Speedmaster bracelet)
- Water Resistance: Not water resistant
![[WTS] Omega Seamaster 300M Blue No Wave 212.30.41.20.03.001 (2017) Full Set](https://preview.redd.it/zfk95rcz2vug1.jpg?width=640&crop=smart&auto=webp&s=d02747baba6dfb222c62903e3bcbb661b12f9aed)
Omega Seamaster 300M Blue No Wave 212.30.41.20.03.001 (2017) Full Set
This is a clean and modern take on the classic Omega Seamaster Diver 300M, featuring a no-wave blue dial and aluminum bezel. It's a great everyday diver with strong wrist presence and proven reliability.
- Condition: Good preowned condition with minor signs of use throughout
- Case size: 41mm diameter
- Movement: Automatic
- Dial: Blue (no wave)
![[WTS] Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001](https://preview.redd.it/r55cyuwctkug1.jpeg?auto=webp&s=9d4fdd30f70a4e513889f16337cf0fef71fb1181)
Omega Seamaster 300m. Box, Cards. 210.30.42.20.06.001
A Omega Seamaster 300m with box and cards is being sold.
- Box: yes
- Cards: yes
![[WTS] Omega Seamaster 300M Two-Tone White Wave – Full Size Automatic (Rare Config) – $3,200](https://preview.redd.it/2yd73buitgug1.jpg?width=640&crop=smart&auto=webp&s=2681e3a16a862d04c1de747caefc731fc6f0e915)
Omega Seamaster 300M Two-Tone White Wave – Full Size Automatic (Rare Config) – $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
![[WTS] Omega Seamaster 300M](https://preview.redd.it/uqcb3l0cu1ug1.jpg?width=640&crop=smart&auto=webp&s=976b173afe517107c442e43ad6f4679733970b39)
Omega Seamaster 300M
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
![[WTS] Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )](https://preview.redd.it/fxjipxaorztg1.jpg?width=640&crop=smart&auto=webp&s=f2b554478a179d9ddf854eaff2d5e221dd8bbe58)
Omega Seamaster 300M Black Aluminum / Orange 210.30.42.20.01.018 ( new / 2025 / box and papers )
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
![[WTS] Omega Seamaster 300M Black / Orange Diver 210.32.42.20.01.006 ( new / 2025 / box and papers )](https://preview.redd.it/v95m5xiyqztg1.jpg?width=640&crop=smart&auto=webp&s=def850d184c2c010473fa5da7d4f46cbf4d21a07)
Omega Seamaster 300M Black / Orange Diver 210.32.42.20.01.006 ( new / 2025 / box and papers )
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
![[WTS] Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )](https://preview.redd.it/s6ntyhd2qztg1.jpg?width=640&crop=smart&auto=webp&s=9fed01727fd81dbf0a466813245774c4342dda8e)
Omega Seamaster 300M 42mm Black 210.30.42.20.01.001 ( new / 2025 / box and papers )
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
![[WTS] BNIB Omega Seamaster 300 ONLY $10k!](https://preview.redd.it/f1x4jy6cwttg1.jpeg?auto=webp&s=6b9a3f10d2089afbf9f3baf757ea2dd3662af82b)
BNIB Omega Seamaster 300 ONLY $10k!
A Brand new Omega Seamaster 300 is being listed for sale.
- Condition: Brand new, full set
- Rrp: $17.2k plus tax