Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / MOP

Reference 231.13.39.21.55.001

About this watch

Welcome, watch enthusiasts! If you’re on the lookout for a watch that combines elegance, durability, and precision, then you’re in the right place. Today, we’re diving deep into the stunning world of the Omega Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / MOP. With a reference number of 231.13.39.21.55.001, this timepiece is a true gem. The brand has a rich legacy of precision timekeeping, and they’ve even been to the moon! So, you can bet that their timepieces are engineered with meticulous care. The Seamaster Aqua Terra family is all about versatility. Whether you’re dressing up for a gala or just enjoying a casual day out, this collection has something for everyone. The first thing you’ll notice about the Aqua Terra is its breathtaking Mother of Pearl (MOP) dial. It’s like wearing a piece of the ocean on your wrist! The iridescent surface catches light beautifully, creating a mesmerizing display that changes with every angle. With a diameter of 38.50 mm, the watch strikes a perfect balance between formality and casual wear. It’s large enough to make a statement yet not so bulky that it becomes cumbersome. The stainless steel case is polished to perfection, giving it a sleek and shiny appearance. Plus, the open case back is a delightful touch, inviting you to admire the intricate movement inside. This watch isn’t just a timepiece; it’s a conversation starter. With a water resistance of 150 meters, the Aqua Terra is versatile enough for both the beach and the boardroom. Whether you’re swimming, snorkeling, or just caught in an unexpected rainstorm, you don’t have to worry about water damage. Omega really thought of everything! The stainless steel bracelet is both sturdy and comfortable. It features a classic design with a secure clasp that ensures it stays safely on your wrist. The brushed and polished links add a touch of sophistication, making it suitable for any occasion. Plus, it’s adjustable, so you can get the perfect fit. Wearing the Aqua Terra feels like a dream. The weight is just right—not too heavy or too light. You’ll forget you have it on, and yet it draws compliments wherever you go. It’s the kind of watch that makes you feel confident, whether you’re on a business call or enjoying a night out. With its stunning design, robust movement, and unbeatable versatility, this watch is a worthy addition to any collection.
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MSRP: $6,600
Market Price: $3,187

Key Features

  • Omega caliber 8500 movement
  • 38.50 mm stainless steel case
  • 150 meters water resistance
  • Mother of Pearl dial
  • Stainless steel bracelet with secure clasp
  • Open case back for viewing movement
  • Chronometer certified for accuracy

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / MOP
Reference
231.13.39.21.55.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 38.5mm
Dial Color
White
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Aqua Terra 41mm white $4200 full set

Omega Aqua Terra 41mm white $4200 full set

Omega - 41mm Aqua Terra · $4,200
  • White dial: true
  • Full set: true
Posted at
Jan 31, 2026, 1:08 PM
Active
[WTS][US] Omega Seamaster Aqua Terra 150m - Turquoise Dial - 41mm - 220.32.41.21.03.001

[US] Omega Seamaster Aqua Terra 150m - Turquoise Dial - 41mm - 220.32.41.21.03.001

Up for sale is an Omega Seamaster Aqua Terra 150m - Turquoise Dial - 41mm watch that functions perfectly mechanically, without issue.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 41mm
  • Water resistance: 150m
Posted at
Jan 31, 2026, 10:22 AM
Active
[WTS] Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

This listing is for an Omega Seamaster Aqua Terra Master Co-Axial in blue, featuring a 41.5mm case size and 7.25" bracelet.

  • Size: 41.5mm case
  • Bracelet length: 7.25 inches
Posted at
Jan 30, 2026, 9:29 PM
Active
[WTS] Omega Seamaster Aqua Terra Annual Calendar - Blue - 38.5mm

Omega Seamaster Aqua Terra Annual Calendar - Blue - 38.5mm

Omega - 23110392203001 · $4,400
The Omega Seamaster Aqua Terra Annual Calendar features a 38.5mm stainless steel case with an annual calendar complication, automatically accounting for months with 30 or 31 days.

  • Condition: Excellent
  • Case size: 38.5mm diameter
  • Water resistance: 150m depth rating
  • Movement: Omega Co-Axial calibre 8601
Posted at
Jan 30, 2026, 6:14 PM
Active
[WTS] Omega Seamaster Aqua Terra 38 Green 220.12.38.20.10.001

Omega Seamaster Aqua Terra 38 Green 220.12.38.20.10.001

This Omega Seamaster Aqua Terra 38 is a recent purchase from Watchmaxx and comes with the watch's original box, papers, and tag.

  • Condition: Mint
  • Year Bought: few months ago
  • Original Strap: yes
  • Additional Straps: TUNS green leather strap
Posted at
Jan 30, 2026, 1:57 PM
Active
[WTS] Omega Aqua Terra White 41mm 2025 Full Set - $5100

Omega Aqua Terra White 41mm 2025 Full Set - $5100

Omega - Aqua Terra · $5,100
This Omega Aqua Terra is a lovely watch with a white dial. It features a Caliber 8900 movement with a jumping hour hand.

  • Condition: Excellent, with minor scratches on bezel and bracelet
  • Case dimensions: 41mm x 13.2mm, 47.9mm lug to lug
  • Movement: Caliber 8900 (Jumping hour hand)
  • Inclusions: box, international warranty card, master chronometer card, pictograms card, OEM rubber strap, additional links
Posted at
Jan 30, 2026, 1:45 AM
Active
[WTS] Omega Seamaster Aqua Terra 38.5mm – “Grey Skyfall Teak Dial | Ref. 231.10.39.21.06.001 | 2020 | Full Set | Excellent

Omega Seamaster Aqua Terra 38.5mm – “Grey Skyfall Teak Dial | Ref. 231.10.39.21.06.001 | 2020 | Full Set | Excellent

This Omega Seamaster Aqua Terra features a highly sought-after grey teak dial and a smooth in-house Calibre 8500 Co-Axial movement with 60-hour power reserve.

  • Condition: Excellent
  • Case size: 38.5mm diameter
  • Calibre: in-house Calibre 8500 Co-Axial
  • Power reserve: 60 hours
Posted at
Jan 30, 2026, 12:28 AM
Active
[WTS] Omega Aqua Terra 231.10.39 Cal 8500 39mm Box and Papers - $2,790 - Reserved post for u/taybrian10

Omega Aqua Terra 231.10.39 Cal 8500 39mm Box and Papers - $2,790 - Reserved post for u/taybrian10

This Omega Aqua Terra 231.10.39 Cal 8500 has a 39mm steel case, Calibre OMEGA 8500 movement, and original Omega steel bracelet.

  • Condition: Great condition, minor marks on the case and caseback
  • Case diameter: 39mm
  • Movement: Calibre OMEGA 8500
  • Bracelet material: Steel
Posted at
Jan 29, 2026, 7:46 PM
Active
[WTS] 2022 Omega Aqua Terra 150M 41mm Blue Teak Dial 9/22 Ref# 220.10.41.21.03.002 $3899.00

2022 Omega Aqua Terra 150M 41mm Blue Teak Dial 9/22 Ref# 220.10.41.21.03.002 $3899.00

Aqua Terra 150M watch featuring a beautiful domed blue teak dial, automatic self-winding movement, and 41mm case size. It has a brushed and polished stainless steel bracelet with a butterfly clasp and offers 150M water resistance.

  • Condition: Great pre-owned shape with some hairlines on the clasp, bracelet, and bezel.
  • Diameter: 41mm
  • Water Resistance: 150M
  • Movement: Automatic self-winding 8900 METAS Caliber
Posted at
Jan 29, 2026, 5:01 PM
Active