Seiko 5 Men's Automatic Watch SNKK31K1 Black Red

Affordable Japanese Automatic: Seiko 5 SNKK31K1, 37mm, Black Dial

Collection

The Seiko SNKK31K1 is part of the Seiko 5 range, one of the most iconic lines in Japanese watchmaking. Launched in 1963, this collection embodies affordable automatic watches: 37mm case, 21-jewel 7S26 caliber, 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 SNKK31K1 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, a Seiko 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 SNKK31K1 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 functions intentionally absent from this entry-level caliber. Its accuracy hovers around ±15 seconds per day, which is expected for an automatic movement in this segment.

Strap

The Seiko SNKK31K1 is equipped with a stainless steel bracelet, both robust and easy to maintain, fastened by a deployant 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.

Supplied with: Storage box, presentation pad, user manual.