The Seiko 5 Automatic 21 Jewels SNKL45K1 is a men's watch with a stainless steel case and bracelet. It features the Seiko Caliber 7S26 automatic movement, eliminating the need for a battery. The black dial with Arabic/English day and date display is complemented by luminous hands and markers for enhanced visibility. The watch has a Hardlex crystal, 21 jewels for improved movement efficiency, and a deployment clasp for a secure fit. It also includes a see-through case back, a pull/push crown, and offers 30m water resistance. With a moderate case diameter of approximately 38mm and a thickness of around 10mm, it combines classic design with functional features.