SEIKO SSB193P1,Men's Chronograph,Stainless Steel Case,Black Dial,Black Leather,100m WR,SSB193 Precise Japan Quartz Movement (Caliber 8T67) Stainless Steel Case, Genuine Leather Band, Regular Connect Type Buckle Clasp Hardlex Mineral, Crystal Date Display, Chronograph Function Case Size: 42 mm Diameter, 11.5 mm Thickness Water Resistant - 10 ATM, Screw Down Case Back