Seiko 5 (Seiko Five) Men's Automatic Watch # SNK613K1 SNK613. Seiko Model: SNK613K1. Movement: Automatic. Caliber: Caliber 7S26 (21 Jewels). Silver dial with Chromed indexes. Water resistant. Approximate case width at crown: 37mm. Type: Sports. Metal: Stainless Steel. Day (English /Spanish) and date calendar. With crystal see-thru caseback. Approximate bracelet width at joint: 17mm. Approximate case thickness: 11mm.