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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →OMEGA’s 2023 Seamaster 75th Anniversary “Summer Blue” collection included three Aqua Terra watches: standard 38 mm and 41 mm models, plus a 43 mm Aqua Terra Worldtimer. The first two are time-and-date Aqua Terras in different case sizes; the Worldtimer is a larger travel watch with a world-time display. Their shared blue anniversary styling connects them, but they are not simply three sizes of the same watch.
Which Aqua Terra watches were part of OMEGA’s 75th-anniversary release?
OMEGA announced its Seamaster Summer Blue collection in June 2023. The collection comprised seven Seamaster models represented by eleven watches, with Summer Blue dial tones used to evoke different depths of water. The Aqua Terra occupies the collection’s sunlit-surface theme. OMEGA’s June 27, 2023 announcement provides the collection context.
The Aqua Terra group consists of the 38 mm and 41 mm standard models and the 43 mm Worldtimer. All three received commemorative steel casebacks and blue anniversary details. “75th Anniversary” describes their place in the collection; the cited launch coverage does not establish that they were individually numbered or limited editions.
How do the three models compare?
| Model | Case dimensions | Movement and power reserve | Water resistance and magnetic resistance | Configurations and reported U.S. launch price |
|---|---|---|---|---|
| Aqua Terra 38 mm | 38 mm diameter; 12.3 mm thick | Co-Axial Calibre 8800; 55 hours | 150 m; at least 15,000 gauss | Steel bracelet: $7,000 |
| Aqua Terra 41 mm | 41 mm diameter; 13.2 mm thick | Co-Axial Calibre 8900; 60 hours | 150 m; at least 15,000 gauss | Blue rubber strap: $6,400; steel bracelet: $6,600 |
| Aqua Terra Worldtimer 43 mm | 43 mm diameter; 14.3 mm thick | Co-Axial Calibre 8938; 60 hours | 150 m; at least 15,000 gauss | Blue rubber strap: $9,900; steel bracelet: $10,100 |
The figures and configurations are reported by Hodinkee’s June 28, 2023 launch coverage. Its U.S. prices are historical launch prices, not current retail or resale quotes. The three movements are METAS-certified Master Chronometers, and the launch report gives magnetic resistance of at least 15,000 gauss for each model.
#1 Best Overall
- Omega Seamaster Automatic Chronometer Summer Blue Dial Men's Watch 220.12.41.21.03.008
What distinguishes the 38 mm and 41 mm standard Aqua Terras?
38 mm Aqua Terra
The 38 mm model pairs the smallest case in the trio with Calibre 8800 and a 55-hour power reserve. Its reported thickness is 12.3 mm. Hodinkee lists it with a steel bracelet at a U.S. launch price of $7,000.
41 mm Aqua Terra
The 41 mm version uses Calibre 8900, with a 60-hour reserve, and measures 13.2 mm thick. Its anniversary dial retains the horizontal teak-inspired finishing beneath the blue treatment. At launch, Hodinkee reported it on a blue rubber strap for $6,400 or a steel bracelet for $6,600.
Rank #2
- Omega Aqua Terra Automatic Blue Dial Men's Watch 220.12.41.21.03.005
Both standard versions have 150 m water resistance and the same reported minimum magnetic resistance. Diameter and thickness establish their measured differences, but they do not determine which will suit a particular wrist; that depends on wrist dimensions and personal fit preferences.
What does the 43 mm Aqua Terra Worldtimer add?
The Worldtimer adds a world-time display rather than merely enlarging the standard Aqua Terra format. Its dial combines a map centered on the North Pole with a 24-hour indication divided into day and night. OMEGA describes the Earth image as laser-ablated on grade 5 titanium, with the 24-hour indication beneath hesalite glass.
Rank #3
- Model 220.12.38.20.03.001
It uses Co-Axial Master Chronometer Calibre 8938, has a 60-hour power reserve, and is rated to 15 bar (150 m / 500 ft). OMEGA’s May 16, 2023 Worldtimer announcement details the display and construction. The reported case is 43 mm across and 14.3 mm thick. Hodinkee listed U.S. launch prices of $9,900 on a blue rubber strap and $10,100 on a steel bracelet.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How should you choose among the three?
- Choose by case measurements: the standard models are 38 mm or 41 mm in diameter, while the Worldtimer is 43 mm. Thickness rises from 12.3 mm to 13.2 mm to 14.3 mm across the three models.
- Choose by display: the 38 mm and 41 mm are standard Aqua Terras; the Worldtimer adds the map-based world-time presentation.
- Choose by wearing configuration: the launch report lists the 38 mm on a steel bracelet, while both strap and bracelet versions are reported for the 41 mm and Worldtimer.
- Verify before buying: confirm the exact reference, included strap or bracelet, condition, seller, and current price. The cited launch prices are from 2023 and should not be treated as current offers.
The anniversary styling is the common thread: Summer Blue gradients and matching luminous elements distinguish the trio, while the 41 mm model’s horizontal dial finishing remains visible. The Worldtimer’s map dial gives it a more elaborate visual identity alongside its additional function.
Quick Recap
Rank #4
- Omega Seamaster Aqua Terra Automatic Blue Dial Men's Watch 220.10.38.20.03.001
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
