Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 30 Red Gold / Diamond / MOP / Bracelet
Reference 231.55.30.20.55.001
About this watch
The Omega Seamaster Aqua Terra 150M Co-Axial 30 is a masterpiece of horological innovation, blending advanced technology with luxurious design. Its self-winding Caliber 8521 movement boasts precision and reliability thanks to its Co-Axial Escapement, ensuring accuracy and longevity. The watch's red gold case is durable and visually stunning, complemented by a mother of pearl dial that shimmers with iridescent quality. Diamond-set bezel and indexes add opulence without excess, while the 30mm diameter makes it perfect for smaller wrists. A water resistance of 150 meters ensures durability in wet conditions, making it ideal for active lifestyles. The watch's Geneva waves in arabesque finish speak to Omega's commitment to aesthetic excellence, making the movement as visually appealing as it is functional. With a power reserve of up to 50 hours and an automatic winding capability, this timepiece delivers on both form and function.
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Key Features
- Self-winding Caliber 8521 movement
- Co-Axial Escapement for improved accuracy and longevity
- Red gold case with durable and visually stunning design
- Mother of pearl dial with iridescent quality
- Diamond-set bezel and indexes for added opulence
- Water resistance of 150 meters for durability in wet conditions
- Power reserve of up to 50 hours with automatic winding capability
Specifications
- Brand
- Omega
- Family
- Aqua Terra
- Model
- Seamaster Aqua Terra 150M Co-Axial 30 Red Gold / Diamond / MOP / Bracelet
- Reference
- 231.55.30.20.55.001
- Movement
- 8521
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Chronometer, Co-Axial Escapement
- Case
- Red Gold 30mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 150
Current Listings

Omega Aqua Terra 8900 - 41mm - Turquoise - 220.10.41.21.03.006 ( new / 2025 )
This Omega Aqua Terra 8900 features a 41mm stainless steel case, turquoise dial, and master chronometer movement.
- Condition: Brand new
- Case material: stainless steel
- Diameter: 41mm
![[WTS] Omega Seamaster Aqua Terra 220.10.41.21.06.001 $3100 REDUCED](https://preview.redd.it/u7yyarzdx51f1.jpg?width=640&crop=smart&auto=webp&s=215f1636d06b1c3251d2b93012655612887a600e)
Omega Seamaster Aqua Terra 220.10.41.21.06.001 $3100 REDUCED
This Omega Seamaster Aqua Terra is a unique addition to any collection, featuring a stunning colorway and perfect condition crystal.
- Condition: Very light wear on the case and bracelet, but perfect crystal condition
- Case size: 41mm
- Thickness: 13.2mm
- Movement: Omega Calibre 8900

Omega Aqua Terra 38 Shades Terracotta Box Papers Warranty 2023
This Omega Seamaster Aqua Terra features a 38mm stainless steel case with terracotta dial and polished bezel on SS bracelet, powered by the Omega In House Co-Axial Caliber 8800 METAS Certified Automatic Movement.
- Condition: Near Mint Condition (96%)
- Case size: 38mm
- Movement: In House Co-Axial Caliber 8800
- Depth rating: 150m/500ft

Pre-Owned Omega Seamaster Aqua Terra 220.10.41.21.03.001
A pre-owned Omega Seamaster Aqua Terra in 41mm stainless steel with blue dial, automatic movement, and 150m water resistance.
- Condition: 79% condition, marks on lugs, bezel, and case; 87% condition, slight marks on links and clasp
- Case size: 41mm diameter
- Water resistance: 150m depth rating
- Bracelet size: up to 7.25 inches
![[WTS] Spectacular Omega Seamaster Aqua Terra Worldtimer, ref. 220.12.43.22.03.001 (PRICE REDUCED!!)](https://preview.redd.it/j9kqormdqy0f1.jpg?width=640&crop=smart&auto=webp&s=cc66d9c80f600d8eff421172861fa872ccbb224b)
Spectacular Omega Seamaster Aqua Terra Worldtimer, ref. 220.12.43.22.03.001 (PRICE REDUCED!!)
This Omega Seamaster Aqua Terra Worldtimer is a stainless steel watch with a 43mm diameter blue dial and rubber strap.
- Condition: Good working condition, missing omega logo on the clasp
- Material: Stainless steel
- Case size: 43mm diameter
- Band material: Rubber
![[WTS] Omega Seamaster Aqua Terra - Silver Wave](https://preview.redd.it/c79m3nw7qy0f1.jpeg?auto=webp&s=4e67a88e02821cd94df617ac87b9402faa344bb8)
Omega Seamaster Aqua Terra - Silver Wave
This Omega Seamaster Aqua Terra features a 41.5mm stainless steel case with a silver wave dial, rhodium-plated hands and indexes, and is powered by the Omega Master Co-Axial Calibre 8500.
- Case Size: 41.5mm
- Water Resistance: 150m / 15 bar
- Power Reserve: 60 hours
![[WTS] Omega Seamaster Aqua Terra 150M Sandstone Dial 220.10.38.20.09.001](https://preview.redd.it/nav6nsf8zj0f1.jpeg?auto=webp&s=2eecbc25b2858b8338c3316114920a3a3c34b7b7)
Omega Seamaster Aqua Terra 150M Sandstone Dial 220.10.38.20.09.001
Up for sale is an Omega Seamaster Aqua Terra 150M Sandstone Dial, a 38mm watch in great condition with no deep marks or issues.
- Condition: Great condition overall, light wear on sandstone dial and case
- Size: 38mm diameter
- Dial color: Sandstone dial
![[WTS] 2025 Omega Seamaster Aqua Terra 150m 41mm 220.10.41.21.01.002 Stainless Steel Black Dial - $5,250](https://external-preview.redd.it/RhmcZ5KESSs3ahUNxkw9IqV20MRFMlqlYfvbvUZrwX0.jpeg?auto=webp&s=4fc9df9f1892c5bb6fc5fc4986623e3d043847bf)
2025 Omega Seamaster Aqua Terra 150m 41mm 220.10.41.21.01.002 Stainless Steel Black Dial - $5,250
2025 Omega Seamaster Aqua Terra 150m 41mm stainless steel watch with a black dial, featuring a master chronometer and international warranty.
- Condition: Excellent
- Material: Stainless Steel
- Size: 41mm diameter
- Water Resistance: 150m
![[WTS] New Omega Seamaster Aqua Terra 150m with box and papers](https://external-preview.redd.it/xpaTj2ozYqzP-hpRG2403OAuCom1lIERtREdczCFNms.jpeg?auto=webp&s=8160148c83437407a6bad14faf6368beb89c1c69)
New Omega Seamaster Aqua Terra 150m with box and papers
A brand new Omega Seamaster Aqua Terra 150m watch with a white dial and grey and orange accents, featuring arrow-shaped hands and index hour markers.
- Condition: Brand new, never worn
- Water Resistance: 150m
- Case Size: 41mm diameter
- Dial Color: White