Seiko SYM605 Japan 21 Jewels Automatic Movement by Seiko (Calibre 4207) Stainless Steel Case and Band with Fold-Over Clasp Hardlex Crystal for Durability, Day/Date Display with Spanish Option, Luminous Hands and Markers Case Size: 27mm Diameter, 10mm Thickness Water Resistant - 30M, Screw Down Case Back