Seiko SRP163 Seiko 24 Jewels Self-Winding Automatic Movement with Hackable Second Hand (Calibre 4R36) (Made in Japan Version) Stainless Steel Case and Bracelet, Push Button Release Clasp Hardlex Mineral Crystal, Day/Date Display with Arabic Option, Luminous Hands and Markers Case Size: 42mm Diameter, 12mm Thickness Water Resistant - 100M, Transparent Screw Down Case Back