Seiko 5 Men's Automatic Watch SNK357K1 Blue

The Seiko 5 SNK357K1 in blue: Automatic 7S26, 37mm case, 30m

Collection

The Seiko SNK357K1 belongs to the Seiko 5 series, continuously produced for over six decades. It is one of the few entry-level automatics to rely on an in-house caliber: the 7S26, reliable and low-cost to maintain. 37mm case, 30m water resistance, exhibition case back to observe the rotor.

Case

Made of stainless steel, the Seiko SNK357K1's case measures 37 mm in diameter and is 11 mm thick. The bezel is fixed. The dial is protected by a Hardlex crystal, Seiko's proprietary treatment for light scratches. The case back is exhibition (transparent), allowing observation of the movement in operation. Water resistance is 30 m, suitable for splashes and rain.

Movement

The Seiko SNK357K1 is powered by the automatic caliber 7S26, offering a power reserve of approximately 41 hours. This movement does not feature hacking (stop-seconds for precise 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.

Bracelet

The stainless steel bracelet of the Seiko SNK357K1, secured by a folding clasp, complements the case coherently. The lug width is 18 mm.

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