Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey / Bracelet
Reference 231.20.39.21.06.001
About this watch
The Omega Aqua Terra 231.20.39.21.06.001 is a masterclass in luxury watchmaking, seamlessly blending elegance with functionality. Its stunning round case, crafted from stainless steel and red gold, exudes sophistication while its grey dial provides exceptional readability. The proprietary hands ensure smooth movement, making it perfect for everyday wear. At the heart of this timepiece lies the Omega caliber 8500 movement, a technical marvel that showcases Omega's commitment to innovation. With a water resistance rating of 150 meters, this watch is built for adventure and can handle the elements with ease. Whether you're in a board meeting or at a beach party, this watch fits right in, making it the ultimate accessory for anyone serious about horology.
Key Features
- 38.50mm Stainless Steel and Red Gold Case
- Sapphire Crystal Glass
- 150m Water Resistance
- Omega Caliber 8500 Movement
- Chronometer Certification
- Co-Axial Escapement for Reduced Friction
Specifications
- Brand
- Omega
- Family
- Aqua Terra
- Model
- Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey / Bracelet
- Reference
- 231.20.39.21.06.001
- Movement
- 8500
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer, Co-Axial Escapement
- Case
- 38.5mm
- Dial Color
- Grey
- Crystal
- Sapphire
- Water Resistance
- 150
Current Listings
![[WTS] Unworn and unfitted Omega Seamaster Aqua Terra 150M 41mm steel on steel - bought Aug 2025 [warranty start date]](https://preview.redd.it/q40rl03sakvf1.jpg?width=640&crop=smart&auto=webp&s=5161931ab338de3d5a3143da5f290328a526fa5a)
Unworn and unfitted Omega Seamaster Aqua Terra 150M 41mm steel on steel - bought Aug 2025 [warranty start date]
This Omega Seamaster Aqua Terra 150M is an automatic watch with a stainless steel case and sapphire crystal.
- Condition: mint condition, unworn
- Movement caliber: 8900
- Water resistance depth rating: 150m
![[WTS] Omega Seamaster Aqua Terra - 36mm - 2504.80](https://preview.redd.it/k3p5sp70civf1.jpg?width=640&crop=smart&auto=webp&s=c9b6e7e058463ac15e246b8325eb63641c54ac9e)
Omega Seamaster Aqua Terra - 36mm - 2504.80
The Omega Seamaster Aqua Terra features a stunning navy blue sunburst dial and is powered by Omega's innovative Co-Axial automatic movement.
- Condition: Excellent overall condition with minimal wear
- Case Size: 36.2mm diameter
- Crystal Type: Domed sapphire crystal with anti-reflective coating
![[WTS] Omega Seamaster Aqua Terra Co-Axial 39mm 231.10.39.21.02.001 White](https://preview.redd.it/q8nzduezjcvf1.jpg?width=640&crop=smart&auto=webp&s=ca62f49d56bd396b954cbe7f8c6f8b29030553ed)
Omega Seamaster Aqua Terra Co-Axial 39mm 231.10.39.21.02.001 White
This Omega Seamaster Aqua Terra Co-Axial features a 39mm case and is available with a 7" bracelet.
- Bracelet Size: 7 inches
![[WTS] Omega Seamaster Aqua Terra Co-Axial 42mm 231.10.42.21.06.001 Gray](https://preview.redd.it/buq1xu5rjcvf1.jpg?width=640&crop=smart&auto=webp&s=640eb60fd20d8087108bbf96eb82857302f1db23)
Omega Seamaster Aqua Terra Co-Axial 42mm 231.10.42.21.06.001 Gray
This Omega Seamaster Aqua Terra Co-Axial is a 42mm watch with a gray finish and has been recently serviced.
- Condition: Pre-owned, serviced
- Case Size: 42mm diameter
- Bracelet Length: 7.25 inches
![[WTS] Omega Seamaster Aqua Terra quartz $1.5k](https://preview.redd.it/x16efaklqavf1.jpg?width=640&crop=smart&auto=webp&s=af2e78deda6f521ca2bf7196bbfc2d154555aeb9)
Omega Seamaster Aqua Terra quartz $1.5k
This Omega Seamaster Aqua Terra quartz watch features a 6.5 inch bracelet that fits the seller's wrist.
- Condition: Good
- Bracelet size: 6.5 in.
- Box/papers: No
![[WTS] 2024 OMEGA Seamaster Aqua Terra Summer Blue Dial 41mm BOXES/PAPERS!](https://preview.redd.it/9mq3m60fy4vf1.jpg?width=640&crop=smart&auto=webp&s=fe3d57d2505a68aed960c02fea529ac613bb9067)
2024 OMEGA Seamaster Aqua Terra Summer Blue Dial 41mm BOXES/PAPERS!
The seller is listing a brand-new OMEGA Seamaster Aqua Terra Summer Blue Dial 41mm watch, complete with all the original packaging and accessories.
- Condition: Brand new with minor handling mark
- Case diameter: 41mm
- Water resistance depth rating: 150 Meters
- Power reserve: 60 Hours

Omega Aqua Terra 8800 - 38mm - Lacquer Black - 220.10.38.20.01.004 ( new )
Up for sale is a brand new Omega Aqua Terra 8800 38mm with Lacquer Black Dial, reference # 220.10.38.20.01.004.
- Condition: Brand new
- Case size: 38mm
- Movement type: Master Chronometer Movement
Omega Seamaster Aqua Terra Green 41mm
The Omega Seamaster Aqua Terra Green is a versatile watch suitable for daily wear, featuring a Master Chronometer certified calibre 8900 with 60 hours of power reserve and antimagnetic properties. It has an excellent bracelet and proportions.
- Condition: Near-mint, 94-95%
- Case size: 41mm x 47.9mm lug to lug
- Thickness: 13.2mm
- Power reserve: 60 hours

Omega Seamaster Aqua Terra Co-Axial White Blue Stainless Steel MINT 2503.33.00
The Omega Seamaster Aqua Terra Co-Axial is a sport-ready watch with dress-worthy charm, featuring a white dial with blue accents and a stainless steel case with brushed and polished finishes.
- Condition: Mint
- Movement: Co-Axial
- Case size: Not specified
- Water resistance: Not specified