
Black Seiko 5 SNKK22J1: 40-hour power reserve, 37 mm, 18 mm lug width
Collection
The Seiko SNKK22J1 belongs to the Seiko 5 range, one of the most iconic lines in Japanese watchmaking. Launched in 1963, this collection embodies accessible automatic watches: 37 mm case, 21-jewel 7S26 caliber, 30 m 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 SNKK22J1 is made of stainless steel, with a diameter of 37 mm and a thickness of 11 mm. The bezel is fixed. The black dial is protected by a Hardlex crystal, Seiko's proprietary treatment for light scratches. The case back is exhibition (transparent), allowing the movement to be observed in operation. The water resistance is 30 m, suitable for splashes and rain.
Movement
The Seiko SNKK22J1 is powered by the automatic 7S26 caliber, 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 functions intentionally absent on this entry-level caliber. Its accuracy oscillates around ±15 seconds per day, which is expected for an automatic movement in this segment.
Bracelet
The Seiko SNKK22J1 is equipped with a stainless steel bracelet, both robust and easy to maintain, secured by a deployment clasp, which makes putting on and taking off the watch easier by 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