The Aqua Terra world time watch of the Omega Seamaster series has outstanding value for money. It has been very popular in the past few years and is also the first choice for global flights. Its design is favored by watch friends, partly because of its outstanding performance, and partly because its style is between formal and casual, making it more versatile for daily travel; in addition, Aqua Terra The unique design of moving the ‘Colored Earth’ onto the dial is quite explosive in the watch circle!

Not long ago, Omega launched the new Seamaster Aqua Terra World Time (hereinafter referred to as Seamaster AT). Although, the Seamaster AT World Time was previously launched in 2017. But this year’s (2023) new Seamaster AT World Time has been upgraded, and its configuration and appearance have been further improved. Including two types: titanium shell gray plate and steel shell green plate.

Omega’s new Seamaster AT World Time, titanium case.
Omega’s new Seamaster AT World Time, steel case.

Any watch with a “color world map” on the dial is often a “ruthless character”.

Drawing a “color map of the world” on the world timepiece is a major advantage project of Patek Philippe, and it became an instant success. In 2008, Patek Philippe launched the 5131 World Time. There was a “map of the world” drawn in cloisonné enamel on the disk (no antique models are involved here). The colors were bright and realistic, and it instantly became a popular model of Patek Philippe. The current model on sale is 5231 . Subsequently, many famous watch brands put the “world map” on the dial. However, most brands simply print a world map with a single color on the disk, and the effect is naturally severely reduced. Until the advent of the Omega Seamaster AT World Time, laser engraving was used to once again put the “real and bright world map” on the dial. Even though the positioning is different, Patek Philippe has the beauty of cloisonné enamel, and Omega has the characteristics of laser engraving

Ever since the introduction of the Seamaster AT World Time, it has gained significant popularity among players, attracting a considerable number of buyers. Interestingly, most players are not particularly in need of the world time function; rather, they are drawn to the appealing design of the Seamaster AT World Time. Originally considered a niche category in the realm of luxury watches, the Seamaster AT World Time has ignited a surge in interest, establishing itself as one of the most sought-after world time watches available in the market.


What enhancements have been incorporated into the latest iteration of the Seamaster AT World Time?

Let’s start with the appearance. The design of the new AT World Time performs well in terms of “appearance”. Compared with the old model, the “world map” on the disk is more refined and eye-catching. Omega cleverly uses laser ablation technology to engrave the central “world map” on the titanium dial, showing a delicate relief effect of oceans and continents. It is worth mentioning that the details of Omega World Time are very exquisite. The color of the ocean is coordinated with the overall color of the watch, while the titanium case is mainly gray, which is different from the green design of the steel case; the continental part is dotted with gold, cleverly outlined Outline the high altitude areas. This map is centered on the North Pole, highlighting the entire Northern Hemisphere. What is particularly noteworthy is that the map has a slightly curved effect, simulating the curvature of the real earth. This meticulous processing makes Omega unique in the design of the map panel. Although there are many watches with map elements on the market, the authenticity and precision of the details displayed by Omega World Time are rare.

Omega’s new Seamaster AT world time, details of the world map


In terms of appearance design, it is divided into a steel shell green version and a titanium shell gray version. The color matching of the two disks is very different. The steel-cased green disk version is dominated by gold, with the hands and hour markers made of 18K gold (Omega Moonshine gold), and the disk is decorated with vertical patterns that imitate the earth’s longitude lines. The titanium case gray dial version is mainly black and white, the hands and time scales are black-plated, the dial is decorated with gray grain, and Ti printing is visible, indicating that the dial is made of titanium. The steel-cased green version is eye-catching overall, while the titanium-cased gray version is even more eye-catching with its colorful globe pattern.

Steel shell green disk version, the disk is decorated with lines
Titanium shell, the disk is decorated with particles and has the words Ti.

In terms of materials, after Omega launched the Seamaster AT World Time in 2017, gold and steel shell versions came out one after another. This year’s new Seamaster AT World Time, whether made of steel or titanium, has introduced a ceramic bezel, which is a significant difference from the old models in the past.

The old model (left) and the new model (right), it can be seen that the new model has a ceramic ring.

In the steel case green dial version, a green ceramic bezel is used, while in the titanium case gray dial version, it is a black ceramic bezel. Both ceramic bezels are brushed. Omega’s move to introduce a ceramic bezel in the Seamaster AT series is quite rare. In addition to significantly improving the scratch resistance of the watch, the ceramic bezel also greatly enhances the sporty feel of the Seamaster AT World Time.

In addition to the above changes, the new Seamaster AT World Time maintains the original design in terms of size and movement. The size of the watch is still 43 mm and the thickness is 14.1 mm. Still using the iconic symmetrical case of the Seamaster AT series, the polished surface on the lugs forms a unique twisted shape, which is a signature feature of Omega lugs. Steel-cased models are available with either a steel chain or green tape, while titanium-cased models currently offer a black tape option.

The new Seamaster AT World Time continues the Omega 8938 automatic movement and adds the 8900 movement of the world time module. Regarding the movement configuration, everyone is already quite familiar with the performance of 8938 and 8900. The swing frequency is 25,200 times/hour, with a power reserve of 60 hours. It uses a silicon hairspring and is equipped with a fine-tuning balance wheel with no card weight. It has been certified by the Master Chronometer. Its antimagnetic performance is as high as 15,000 Gauss, and the daily error is only 0/+5 seconds. . The automatic rotor and the upper plywood display Omega’s iconic Arabic-style Geneva stripes decoration, while the lower plywood displays pearl pattern decoration. The screw heads are exposed and black plated. Omega’s flagship 8800/8900 series movements have always been one of the most outstanding automatic movements on the market and are worthy of users’ full trust.

The Seamaster AT World Time is one of the best world timers on the market.


Setting aside high-end “cloisonné enamel” world timers like the Patek Philippe 5131 and 5231, the Omega Seamaster AT World Time stands out as one of the finest world timers in the mainstream watch market. Numerous enthusiasts have enthusiastically chosen the Omega World Time with their hard-earned money. While the world time function is undoubtedly significant, the true highlight lies in the superbly executed “color earth” feature of the Seamaster AT World Time. It not only enhances the watch’s overall appeal but also instills a sense of confidence, as if declaring, “the world is in my hands.” This intrinsic quality is what makes this timepiece exceptionally charming.

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