Description
The Seiko 5 Sports GMT SSK003K is a precision-engineered automatic timepiece that exemplifies Seiko’s heritage of mechanical craftsmanship and innovation. At its core is the Calibre 4R34, an automatic movement with manual winding capability, offering a power reserve of approximately 41 hours. The movement operates on 24 jewels, ensuring reduced friction, improved accuracy, and long-term reliability. The 24-hour GMT hand allows the wearer to track a second time zone with ease, while the stop-seconds hand function provides precise time-setting control.
The case of the Seiko SSK003K is constructed from robust stainless steel, designed for both durability and refined aesthetics. With a 42.5mm diameter, 13.6mm thickness, and 46.0mm lug-to-lug distance, it maintains a strong wrist presence while remaining comfortable for everyday wear. The 22mm lug width ensures compatibility with a wide range of straps and bracelets. The watch is fitted with a Hardlex crystal featuring a magnified lens, enhancing date visibility and providing excellent scratch resistance.
For enhanced legibility, Seiko’s Lumibrite technology is applied to the hands and hour indexes, ensuring clear readability in low-light environments. The rotating bezel adds functionality for tracking elapsed time or secondary time zones, complemented by a screw case back and see-through exhibition window that showcases the intricate movement in operation.
Built for reliability, the SSK003K is water-resistant to 10 bar (100 metres), suitable for everyday use, including swimming and light water activities. It weighs approximately 161 grams, offering a solid yet balanced feel on the wrist. The watch is secured with a three-fold clasp featuring a push-button release and secure lock, ensuring comfort and stability during wear.
Combining advanced mechanical performance, practical GMT functionality, and Seiko’s timeless design language, the Seiko 5 Sports GMT SSK003K stands out as a versatile and technically refined automatic watch—perfect for global travellers and mechanical watch enthusiasts alike.

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