We'll introduce five Seiko watches that we recommend for men in their 30s. Seiko, a leading Japanese watch brand, offers a wide variety of collections that combine excellent design and functionality at affordable prices. Even if you're thinking of buying your first watch, why not consider them as an option?

Text by Kento Nii
[Article published on January 3, 2025]
Seiko introduces five watches recommended for men in their 30s
Seiko is a watch brand whose history began as the Hattori Watch Shop, opened by Hattori Kintaro in 1881. Since founding the Seikosha watch manufacturing factory in 1892, the company has focused on mass-producing high-quality watches, and is known as a brand that has made a significant contribution to the development of the watch industry, developing the first domestically produced wristwatch, the Laurel, the first domestically produced diver's watch, the 62MAS-010, and the world's first mass-produced quartz wristwatch, the Astron. Incidentally, the brand name "Seiko" began to be used on products in 1924.
Today, Seiko offers a wide range of brands, including "Seiko Prospex," which boasts functionality suited to sports and outdoor activities, "Seiko Presage," which advocates spreading "Japanese aesthetics" to the world, "Seiko Astron," which offers models that utilize cutting-edge technology, and "King Seiko," a reproduction of a classic Japanese mechanical wristwatch manufactured in the 1960s. The collections, which cover a wide range of prices and cover a variety of needs, have gained support from people of all ages and genders.
Seiko is a watch brand we recommend to men in their 30s, who are experiencing increased social responsibilities and reaching maturity in both their careers and lifestyles. At an age when they are establishing their own style, the wide range of options offered by Seiko watches will help them express their individuality. In addition, the high quality, unique design, and reasonable price of Seiko watches, all of which are manufactured in-house, make them an easy choice for everyday use by men in their 30s.
This time, we have selected five models from Seiko's current lineup that are recommended for both functionality and design. We hope you will find one that suits your usage situation and lifestyle.
Seiko Prospex "Mechanical Divers 1968 Heritage GMT" Ref. SBEJ009
Seiko Prospex is a brand that offers high-performance watches for active pursuits such as diving and trekking. Among these is the "Mechanical Divers 1968 Heritage GMT" Ref. SBEJ009, a diver's watch whose design is rooted in the 1968 Heritage model. Another major feature is its GMT function.

Automatic winding (Cal. 6R54). 24 jewels. 21,600 vph. Power reserve approximately 72 hours. Stainless steel case (diameter 42 mm, thickness 12.9 mm). 200m water resistant for air diving. 176,000 yen (tax included).
The deep green coloring gives the watch a calm appearance, while the wide bezel and large case suggest robustness, creating a sporty finish. The case diameter is 42mm, and while its shape is reminiscent of the original, the edgy lugs give it a modern look. The gold-colored 24-hour hand used for the GMT function and the red tip of the second hand are accents that not only highlight the design's appeal but also contribute to high readability. The hour and minute hands and indices are also easy to read, and the application of luminous paint ensures excellent visibility in dark places.
One of the appeals of this watch is its functionality as a tool watch, with 200m water resistance for air diving and a unidirectional rotating bezel. Combining this professional functionality with a sophisticated design that is also suitable for everyday use, this watch is sure to be a versatile choice for men in their 30s, from business situations to weekend leisure activities.
The movement is equipped with the automatic Cal. 6R54, which has a power reserve of approximately 72 hours.
Seiko Prospex "Marine Master" Ref.SBDX063
The SBDX063, also from Seiko Prospex, is a part of the Marinemaster series, designed for more professional diving situations while also taking into consideration the joy of ownership through its exterior construction. Like the SBDX009 mentioned above, this model inherits the design of the 1968 heritage model while being upgraded with modern technology.

Automatic movement (Cal. 8L35). 26 jewels. 28,800 vph. Power reserve approximately 50 hours. Stainless steel case (diameter 42.6 mm, thickness 13.4 mm). 300m water resistant for air diving. 407,000 yen (tax included).
This model, which inherits the original design, features a bold, distortion-free mirror finish on the case sides, giving it a powerful yet luxurious appearance. In reviving the design, the knurled shapes on the bezel and crown have been revised, and the structure of the screw-down crown has also been revamped, resulting in a model that is easy to operate and maintain.
The matte dial features a high-contrast design with skillfully controlled color and texture, designed to highlight each element. The luminous paint applied throughout not only ensures visibility in dark places, but also gives the watch a color that appears to have aged over time, creating an appealing vintage look for this reproduction model.
This model, water resistant to 300m for air diving, is a reliable companion for men in their 30s who enjoy outdoor activities and marine sports. The dignified design of this heritage model also lends a touch of elegance to the wrist of a mature man. The movement is the Cal. 8L35, a member of the Cal. 8L series designed for divers' watches, and boasts a power reserve of approximately 50 hours.
King Seiko "KS1969" Ref.SDKA017
King Seiko is a watch that was launched in 1961 as Seiko's luxury line. After going out of production, it was relaunched in 2021. The following year, in 2022, it reappeared as part of the regular collection, marking its return after a hiatus of nearly 50 years. It is characterized by performance that lives up to the "King" name and a stately design. The "KS1969" Ref. SDKA017, in particular, is an elegant watch whose design was inspired by the "45KCM" released in 1969.

Automatic (Cal. 6L35). 26 jewels. Power reserve approximately 45 hours. 28,800 vph. Stainless steel case (diameter 39.4 mm, thickness 9.9 mm). Water resistant to 5 bar. Price: 396,000 yen (tax included).
The silver dial, with its high-quality satin finish, is inspired by the cityscape of modern Tokyo. The three-sided hands and applied indexes, each with a flat surface and polished finish, create a contrast in appearance despite the monotone silver finish. The double index at 12 o'clock is cut like an arrow feather, demonstrating the watch's uncompromising attention to detail.
Another distinctive feature of this model is the oval case, reminiscent of the original. The sides and lugs are smoothly connected, and the surface is mirror-finished without distortion. The case is less than 10mm thick, and the bracelet with its fine links gives it a very dressy look.
The movement is the automatic Cal. 6L35, designed to fit a thin case, and has a power reserve of approximately 45 hours.
This dressy watch combines a luxurious look with a slim design, making it easy to match with both formal and smart casual fashion.
Seiko Presage "Craftsmanship Series Arita Porcelain Dial" Ref.SART003
Seiko Presage is a brand that inherits Seiko's more than 100-year-old tradition of watchmaking and promotes the appeal of mechanical watches and Japanese aesthetics to the world. The featured Ref. SART003 is part of the "Craftsmanship Series," and is a unique model that stands out with its dial made from Arita ware, a traditional Japanese craft.

Automatic movement (Cal. 6R5H). 24 jewels. 21,600 vph. Power reserve approximately 72 hours. Stainless steel case (diameter 40.6 mm, thickness 12.5 mm). Water resistant to 10 bar. Price: 259,600 yen (tax included).
The pure white Arita ware dial, coated with a transparent glaze, has the delicate luster and transparency unique to porcelain, and the minute irregularities on the inside of the indexes give it a delicate shadow. The appearance, with its curved leaf hands and bar indexes, gives it a truly classical impression. In addition, a 24-hour display with a bowl-shaped Arabic index is placed at the 6 o'clock position, enhancing functionality and adding a touch of expression to the dial.
The case diameter is 40.6mm, not too large and sharp, yet with an elegant design that matches the dial. The attached multi-link bracelet will also add an elegant touch to your wrist. The special feeling created by the Arita porcelain dial and the elegant design make this a model that can be easily worn for both business and private occasions.
The movement is Cal. 6R5H, which has a power reserve of approximately 72 hours, and the movement of the balance and rotor can be seen through the transparent case back.
Seiko Astron "Nexter Series GPS Solar Model" Ref. SBXC159
Seiko Astron is a brand that symbolizes Seiko's innovative spirit, inheriting its name from the model of the same name that was the world's first commercially available quartz wristwatch. The Nexter Series GPS Solar Model Ref. SBXC159 is a part of the NEXTER series, known for its sophisticated yet dignified design, and is characterized by its compact titanium case and multifunctionality.

GPS solar (Cal. 5X83). Runs for approximately 24 months on a full charge (power save mode). 14 jewels. Ti case (42mm diameter, 12.4mm thick). Water resistant to 10 bar. Price: 286,000 yen (tax included).
This modern piece features an edgy design on the dial, bracelet, and case, and its silver-tone look combines functional beauty with a sophisticated finish. The dial, in particular, features a hairline-style stamped pattern, and the use of finishes and edging ensures readability, creating a sophisticated impression while still providing ample information.
The case measures 42mm in diameter and 12.4mm thick, making it more compact than similar Seiko Astron multi-hand models. The lightweight titanium material and the short-pitch bracelet, which blends seamlessly with the case, also contribute to a comfortable fit.
The watch is equipped with the GPS solar movement Cal. 5X83, which receives radio waves from GPS satellites, allowing it to display accurate time anywhere on Earth as long as the reception is adequate. It also boasts world time, dual time display, and chronograph functions, making it a versatile watch that is characteristic of the Seiko Astron. Because it is solar-powered, there is no need for regular battery changes, making it a reliable choice for business people who demand accurate timekeeping at all times.



