Watch writer Shinichi Sato recommends five diver's watches released in the summer of 2025.

Many watch manufacturers have announced new watches for the seasons of 2025, with many sporty diver watches and models in vibrant colors that match the sea in the summer. Here, we will introduce some new diver watches that are attracting attention as "summer watches" that you'll want to wear even when it's hot.

Check out the new 2025 diver's watches you'll want to wear this summer

　In the summer, when T-shirts and polo shirts are more popular, many people are likely to want to wear a diver's watch to add volume and impact to their wrists. Even if you consider reasons other than styling, a highly waterproof watch is a safe choice for a season when sweatiness and frequent showers are common. Also, with summer approaching, various brands are proposing vibrant models that match seaside resorts, and incorporating them into your daily style will brighten your mood.

　So this time, we'll be introducing some new diver's watches that you'll want to wear this summer.

Blancpain Fifty Fathoms Automatic now available in a compact model

　Blancpain's Fifty Fathoms, known as the father of the modern diver's watch, has now been released in a 38mm case. In recent years, the Fifty Fathoms has been highly acclaimed as a masterpiece diver's watch, not only for its historical background but also for its highly functional and aesthetically pleasing movement housed in an equally well-crafted case. While the lineup has primarily consisted of 45mm cases for a long time, a 42mm case model was introduced in 2024, broadening the range of choices.

　A 38mm model was added in 2025. Its styling maintains the design codes of the previous model, such as a unidirectional rotating bezel covered with sapphire crystal and a polished, rounded case, and will be good news for those who were put off by the size of the Fifty Fathoms. The only difference from the previous model is the dial finish. While the 45mm model combined different finishes on the center and outer periphery, this model features a sunburst finish, giving it a more tool watch feel.

　Among the several variations available, the model featured in this article features a stainless steel case with a black dial and bracelet. Other options include a sail canvas strap, a rubber strap, and a NATO strap. Additionally, models with a titanium case and a blue dial, and an 18K red gold case and a blue dial have also been announced.

　This model is perfect for summer, and with its classic design and compact design that can be easily paired with long sleeves, it will be a useful model that can be coordinated with outfits of any season.

Omega's Seamaster Diver 300M in Orange

　Omega's Seamaster Diver 300M is a highly popular diver's watch. The Seamaster first appeared in the late 1940s as a multi-purpose model with high water resistance for the time, and has since developed into a core model in the Omega collection. In 1957, Omega established its Professional Line, which included the Seamaster 300 diver's watch. This led to the current Seamaster Diver 300M and the Seamaster Planet Ocean, which is suitable for even deeper depths.

　This time, we'll be looking at a new model of the Seamaster Diver 300M, which incorporates orange into its design. Orange is a color that has been used in Omega's diver's watches for the past 20 years, including the Seamaster Planet Ocean 6000M Ref. 215.30.46.21.06.001, to ensure visibility underwater and highlight safety features. The new dial design retains the previous model's, but orange is used for the second hand, the edging of the 3, 6, 9, and 12 o'clock indices, and the "Seamaster" logo. Another eye-catching feature is the orange rubber strap that comes with it.

　Historically, the orange used in this piece originated as a functional color (for example, the eye-catching orange used for the lining of flight jackets), but wearing a bright rubber strap in the summer is a classic coordination, and you'll want to choose this piece against the backdrop of a summer sea or blue sky where the orange stands out.

The Refreshed Breitling Superocean Heritage

　This year's updated Breitling Superocean Heritage model is a highlight of its appealing rubber strap. The updated design follows the original model released in 1957, with the hands, bezel, and mesh bracelet becoming iconic features of this watch. The design harmonizes the classic style of the original model with the elegance of Breitling's recent models.

　It's not just the design that's noteworthy; the movement, Cal. B31, also deserves attention. The automatic movement, Cal. B31, is Breitling's latest movement, which just debuted in the Top Time B31, announced in March. Its base is the Cal. 01, Breitling's signature automatic chronograph movement, and Cal. B31 was developed with the concept of narrowing its function to time display while improving its basic performance and reliability.

　As a prime example of its basic performance, it has a power reserve of approximately 78 hours and is COSC-certified by the Swiss Official Chronometer Testing Institute, which meets modern standards, and it also comes with a five-year warranty, which should provide peace of mind to users.

　The model we're featuring is the green Superocean Heritage B31 Automatic 40 with a 40mm case diameter. Breitling offers a green model in each of its collections, and I feel that they are a brand that uses green well, adjusting the hue depending on the collection. This model has a chic hue that is subdued in saturation while still being bright and even having a hint of gray. It is paired with a rubber strap with a texture that mimics the collection's iconic mesh bracelet, and the rubber strap in the same color as the dial adds a pop to this model.

Seiko's limited edition commemorative model celebrates the 50th anniversary of the release of the timeless classic "Jaws."

　Speaking of summer, it's the sea. And speaking of the sea, it's shark movies. This year marks the 50th anniversary of the release of Jaws, the landmark shark movie. To commemorate this, Seiko Prospex released the "Jaws 50th Anniversary Limited Edition." This is the only model we could feature in this project.

　Jaws, released in 1975, is a timeless masterpiece directed by Steven Spielberg, packed with thriller, panic, and action elements, and set a new record for the highest box office sales in the world at the time. Even if you've never seen the film, you've likely heard its terrifying background music at least once.

　The collaboration model is based on Seiko's model affectionately known as the "Turtle," which can be traced back to the "3rd Diver" Ref. 6306 design released in 1976, which was released around the same time as Jaws was released. The overall design is made to have a refreshing impression with a navy bezel insert and endpaper reminiscent of the sea, a rubber strap, and a dial with a gradient that changes from blue to silver, reminiscent of the key visual of Jaws, evoking the tranquil resort seen at the beginning of the film.

　The dial features a red "JAWS" logo in the center, with a stamped wave pattern. Upon closer inspection, a shark is hidden within the stamped design, appearing to emerge depending on the light. This is an homage to the fact that sharks are rarely seen in the film, heightening the sense of fear of the invisible.

If you're looking for something refreshing, check out the Tudor Black Bay 54 "Lagoon Blue"

　Finally, let's look at a refreshing watch that, while it falls into the diver's watch category, can be coordinated like an informal watch: Tudor's Black Bay 54 "Lagoon Blue." The Black Bay series is centered around the Black Bay (41mm case diameter), which is the starting point of the collection, as well as the larger 43mm model, the Black Bay 68, the classic 39mm model, the Black Bay 58, the Black Bay One without a rotating bezel, as well as GMT and chronograph models.

　The Black Bay 54 we'll be looking at today is a compact diver's watch with a 37mm case diameter. The first model in the lineup had a classic look with a black bezel insert, gold-colored hands and scales, and a rivet-type bracelet. In contrast, the Black Bay 54 "Lagoon Blue" features a pale, refreshing turquoise dial with a fine wave-like texture, a mirror-polished stainless steel insert, and a five-row link bracelet, creating a dressier look.

　Its water resistance is 200m, equivalent to that of a full-fledged diver's watch, and it is equipped with the automatic movement Cal. MT5400, a COSC-certified chronometer, making it a truly impeccable watch. Furthermore, its coloring and size, combined with its practicality and suitability for women, make it a noteworthy unisex diver's model.

　With a case diameter of 37mm and a thickness of 11.2mm, it is closer in size to an informal watch than a typical diver's watch, and the five-row bracelet adds to that style. Depending on the owner's coordination, this watch could match both a resort look and a suit style.