Seiko GMT SSK003 Review

seiko 5 Sports GMT ssk003k1 on the background

Watches, with their ticking hands and intricate mechanisms, have always been more than timekeepers—they’re vessels carrying tales of innovation and functionality. The Seiko SSK003, a distinguished entry into this narrative, unfolds its own story, with a unique feature taking center stage: the GMT function.

The GMT, or Greenwich Mean Time, function is a timekeeping marvel born from the necessity of the jet age. A creation steeped in history, it was initially designed for pilots and travelers, allowing them to track multiple time zones simultaneously. As we explore the Seiko SSK003 review, we’ll delve not only into its craftsmanship but also into the legacy of GMT, a testament to the ever-evolving relationship between watches and the world they accompany.



  • Material: Stainless Steel
  • Diameter: 42.5mm
  • Thickness: 13.6mm
  • Case Shape: Round
  • Case Back: Transparent exhibition case back


  • Color: Navi Blue
  • Markers: Applied hour markers
  • Hands: Luminous hands


  • Material: Hardlex crystal


  • Type: Bidirectional rotating bezel
  • Design: Coin edge


  • Caliber: Seiko Caliber 4R34
  • Type: Automatic
  • Jewels: 24
  • Power Reserve: Approximately 41 hours
  • Hacking: No


  • Material: Stainless Steel
  • Clasp: Deployment clasp

Water Resistance:

  • 100 meters (10 bar)


  • LumiBrite on hands and markers


  • Cyclops date display
  • Screw-down crown
  • Exhibition case back

Case and Materials

The Seiko SSK003, like a stoic sentinel on your wrist, introduces itself with a stainless steel case that doesn’t scream for attention but demands respect. Robustness is the order of the day, with a 42mm diameter that strikes a confident balance between presence and restraint. The case, a mix of brushed and polished finishes, seems indifferent to the whims of fashion, embracing a timeless aesthetic that might not shout, but certainly whispers sophistication.

The bezel, marked with meticulous detailing, doesn’t boast flamboyance but quietly asserts its place in the ensemble. The brushed surfaces play catch with the light, a subtle dance that hints at the meticulous craftsmanship within. It’s not a case that craves the spotlight; rather, it’s content to stand firm, letting its endurance speak louder than words.


The unassuming hero of the Seiko SSK003, the bidirectional bezel, silently asserts its functionality. Smooth to the touch, it doesn’t demand attention but offers a quiet assurance. In this Seiko GMT review, it’s worth noting that a tactile dance reveals its bidirectional nature, allowing for seamless adjustments, a subtle nod to practicality. This unpretentious bezel, more utilitarian than ornate, becomes a silent navigator. Its unassuming presence allows the wearer to effortlessly track three different time zones, a practical touch for those traversing the complexities of a globalized world. It’s not a bezel that brags; it’s one that simply does its job, an understated companion in the intricate choreography of timekeeping.

While the bidirectional bezel hints at the ability to track multiple time zones, it’s hard to imagine a daily scenario demanding such intricacy. However, consider the cosmopolitan individual who originates from one country, resides in another, and perhaps works remotely or frequently travels to yet another with a different time zone. For such a globetrotter, the Seiko SSK003 becomes more than a watch – it becomes a companion harmonizing with the complexities of a modern, interconnected life.

Dial and Display

The dial of the Seiko SSK003 embraces a deep navy blue, a color that transcends trends, signaling timeless elegance. The dial, a canvas of elegance, boasts a deep navy blue hue that shifts gracefully with the changing light. Applied silver-tone indices and hands dance upon this canvas, offering not just timekeeping but a visual spectacle and marking the hours with a silent precision. Legibility is paramount, with generous lume on markers and hands ensuring a radiant glow in dim settings, turning the watch into a guiding beacon through the night.

What catches the discerning eye is the discreet yet functional Cyclops date window, reminiscent of the iconic Rolex Datejust.This small but impactful feature magnifies the date, providing a visual focal point while maintaining the overall clarity of the dial. It’s a subtle touch that pays homage to watchmaking heritage while seamlessly integrating practicality. As light plays upon the textured surface, the dial reveals its nuances, turning the simple act of checking time into a moment of subtle indulgence.

Movement and Accuracy

Beneath the surface resides the heart of the SSK003 – the Seiko Caliber 4R34 automatic movement. Its rhythmic beats propel the gracefully sweeping seconds hand, a subtle dance that mirrors the precision within. The Seiko 4R34 is an automatic mechanical movement belonging to Seiko’s Caliber 4R family. It is a robust and reliable movement known for its precision and durability. The 4R34 is a descendant of the Caliber 4R movement series, which itself is an evolution of Seiko’s long-standing watchmaking expertise while being 1mm wider that the popular 4R36 mechanism.


  • Automatic (Self-Winding): The 4R34 is an automatic movement, meaning it harnesses the motion of the wearer’s wrist to power the watch. This eliminates the need for manual winding and is a hallmark of convenience in mechanical watches.
  • Hacking Function: The movement is equipped with a hacking function, allowing the second hand to stop when the time is being set. This feature aids in precise time synchronization.
  • Hand-Winding Capability: In addition to automatic winding, the 4R34 movement can also be manually wound, providing flexibility in how the watch is powered.
  • Jewel Bearings: Like many quality mechanical movements, the 4R34 incorporates jewel bearings, reducing friction between moving parts and enhancing longevity.


The Seiko 4R34 movement is recognized for its respectable accuracy in the realm of mechanical watches. The accuracy is generally within the range of around -15 to +25 seconds per day. The specific performance may vary between individual watches, and factors such as regular servicing and proper calibration can influence accuracy.

The Seiko 4R34 is part of Seiko’s ongoing commitment to advancing mechanical watchmaking. Seiko has a rich history in horology, dating back to the late 19th century, and has been at the forefront of innovation, introducing technologies such as the Spring Drive and Kinetic movements. The 4R series, including the 4R34, is a testament to Seiko’s dedication to providing reliable and accessible mechanical movements, bringing the charm of traditional watchmaking to a broader audience.


The Seiko SSK003 is adorned with a Jubilee bracelet, a classic and timeless choice that echoes vintage elegance. The bracelet, though a bit on the sturdy side, exhibits a certain robustness that aligns with the watch’s overall character. It doesn’t boast the finesse of more delicate designs but confidently does its job, ensuring a secure and steadfast connection to the wrist.

One of the charming aspects of the Jubilee bracelet lies in its easy configurability. The wearer can effortlessly adjust the bracelet to achieve a customized fit, adding a touch of practicality to its slightly cumbersome demeanor. While not the epitome of subtlety, the Jubilee bracelet on the SSK003 contributes to the watch’s enduring appeal, striking a balance between functionality and classic aesthetics.

Style and Versatility

Coming also in orange and dark grey colors with different model names, the Seiko SSK003 exudes a quiet elegance, with its deep navy blue dial and Jubilee bracelet seamlessly blending classic charm with a touch of vintage sophistication. Its versatility knows no bounds, effortlessly transitioning from formal affairs to casual rendezvous with a timeless grace.

A noteworthy comparison can be drawn with the Seiko 5 Sports SRPJ45, as both models share strikingly similar cases and winding head placements. While the SSK003 leans towards a more understated and refined aesthetic, the SRPJ45 embraces a sportier flair. The similarity in case design creates an interesting dialogue between the two, highlighting how subtle variations can give birth to distinct characters within the Seiko family.

seiko srpj45k1 on blue background

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Check out another Seiko 5 automatic watch with a similar case and winding head.

For those seeking versatility in a watch, the SSK003 stands as a poised companion, harmonizing with various styles and occasions. Whether paired with a suit or worn with laid-back attire, its classic demeanor is a canvas waiting to adapt to the wearer’s narrative. The shared design elements with the SRPJ45 add a layer of familial connection for Seiko enthusiasts, offering a choice that aligns with personal tastes and preferences.


As on of the best Seiko GMT watches, the SSK003 model, nestled within the distinguished Seiko 5 series, comes with a price tag that reflects the added intricacies it brings to the wrist. While many Seiko 5 models comfortably find their place within the $200 range, the SSK003 carves a different path with a price ranging from $300 to $400.

This slightly elevated cost can be attributed to the watch’s distinctive features. The inclusion of a bidirectional rotating bezel and a GMT function lends an additional layer of functionality, making the SSK003 a standout within the Seiko 5 series. These features not only contribute to the watch’s versatility but also add a touch of complexity to its craftsmanship, justifying the moderate premium in its price.

For those drawn to the allure of tracking multiple time zones with the ease of a bidirectional bezel, the Seiko SSK003’s price becomes an investment in both form and function. It’s a testament to Seiko’s commitment to offering timepieces that cater to diverse tastes, even if it means venturing slightly beyond the standard price range of its renowned Seiko 5 series counterparts.

Pros and Cons

From boardroom meetings to weekend adventures, the SSK003 effortlessly transitions, embodying versatility in design. The balance of classic elements and modern aesthetics makes it a chameleon of style, adapting to the wearer’s mood and attire with ease. Navigating the seas of watch choices, the Seiko SSK003 emerges as a contender with its blend of classic design and functionality. As with any timepiece, it carries its set of advantages and considerations. In this section, we delve into the nuanced realm of pros and cons, aiming to provide a comprehensive view that aids in making an informed decision. From the timeless allure of its Jubilee bracelet to potential considerations like weight, let’s explore the facets that shape the Seiko SSK003’s identity.


  • Classic Design: The Seiko SSK003 boasts a timeless design with a deep navy blue dial and Jubilee bracelet, offering an elegant and versatile aesthetic.
  • Jubilee Bracelet: The inclusion of a Jubilee bracelet adds a touch of vintage charm, contributing to the watch’s overall classic appeal.
  • Seiko 4R34 Movement: The reliable and robust Seiko 4R34 automatic movement powers the watch, providing accurate timekeeping and a hacking function for precise time setting.
  • Bidirectional Bezel: The bidirectional rotating bezel enhances functionality, allowing the wearer to easily track and adjust multiple time zones.
  • Cyclops Date Window: The Cyclops date window, reminiscent of Rolex Datejust, magnifies the date for enhanced visibility, combining practicality with a classic feature.
  • Versatility: The watch’s classic design and shared design elements with models like the Seiko 5 Sports SRPJ45 contribute to its versatility, suitable for various occasions and styles.
  • Water Resistance: The watch’s 100 m water resistance, ensures durability and suitability for daily wear, including exposure to water.


  • Clumsy Bracelet: The Jubilee bracelet, while classic, might be considered a bit clumsy by some wearers, lacking the finesse of more modern or delicate designs.
  • Weight: The watch may have a noticeable weight on the wrist, potentially contributing to a slightly bulky feel for those who prefer lighter timepieces.
  • Limited Modern Features: Depending on personal preferences, some users might find the watch lacking certain modern features found in contemporary timepieces, such as advanced complications or materials.
  • Price: The price tag can demotivate enthusiasts from buying this watch since it costs relatively more than other Seiko 5 Sports models.


In the grand symphony of watches, the Seiko SSK003 plays a melody that resonates with those who appreciate classic elegance tinged with practicality. This timepiece, adorned with a Jubilee bracelet and powered by the robust Seiko 4R34 movement, is a companion for the discerning wearer.

Ideal for individuals who embody a timeless sophistication and seek versatility in their timekeeping, the Seiko SSK003 seamlessly transitions from boardroom to casual gatherings. Its classic design suggests a wearer with a penchant for understated elegance and a nod to horological tradition.

In the end, this Seiko SSK003 review invites wearers to embrace time not just as a measure but as a companion on life’s diverse journeys. Whether tracing the intricacies of multiple time zones or simply enjoying the elegance of a well-crafted timepiece, the SSK003 is a testament to Seiko’s commitment to timeless style and practical functionality.


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