

The White Seiko 5 SNKK25K1: Automatic 7S26, 37mm Case, 30m
Collection
The Seiko SNKK25K1 is part of the Seiko 5 range, one of the most iconic lines in Japanese watchmaking. Launched in 1963, this collection embodies accessible automatics: a 37mm case, 7S26 caliber with 21 jewels, and 30m water resistance. Note: the 7S26 does not feature hacking or manual winding — an intentional characteristic of this entry-level caliber.
Case
The case of the Seiko SNKK25K1 is made of stainless steel, with a diameter of 37 mm and a thickness of 11 mm. The bezel is fixed. The white dial is protected by Hardlex glass, Seiko's proprietary treatment for light scratches. The case back is exhibition (transparent), allowing observation of the movement in operation. The water resistance is 30 m, suitable for splashes and rain.
Movement
The Seiko SNKK25K1 is powered by the automatic caliber 7S26, offering a power reserve of approximately 41 hours. This movement does not feature hacking (stopping the second hand for time setting) or manual winding — two intentionally absent functions on this entry-level caliber. Its accuracy fluctuates around ±15 seconds per day, which is expected for an automatic movement in this segment.
Bracelet
The Seiko SNKK25K1 is equipped with a stainless steel bracelet, both robust and easy to maintain, fastened by a deployment clasp, which makes it easy to put on and take off the watch while securing the bracelet to the wrist. The lug width is 18 mm.
Specifics
Housing
Dial
Bracelet
Other features
Supplied with: Storage box, presentation pad, user manual.
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2-year international warranty