Seiko 5 Sports Men's 100M Self-Winding Automatic Watch Model SNZE81K1 Japan 23 Jewels Automatic Movement by Seiko (Calibre 7S36) Stainless Steel Case and Band with Push-Button Fold-Over Safety Clasp Day/Date Display with Spanish Option, Luminous Hands and Markers, Hardlex Crystal for Durability Screwdown See-Thru Caseback, Rotating Compass TiCN Gun Plating Bezel Water Resistant - 100M, Case measures 40mm diameter by 13mm thick