Model : 18K Rose Gold Plated Polished SS Case, Metallic Black dial, Black Subdials on Leather Strap with Stainless Steel Tang BuckleMovement: Japanese OS 20 Quartz working Chronograph movement Functions: Hours, Minutes, Seconds : Running Secs at 6.00 subdials, Date : Adjustment via Crown, Chronograph : 12.00 subdial - Min 2.00 pusher - start/stop chrono, 4.00 pusher - reset Date : 9.00 ( set via crown) Dimensions : Dia 43mm x 15mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Thick 18k Rose Gold Plated... 5 mils Back : Solid Case Back Crown : One-piece solid pullout crown with o ring Crystal: Synthetic Sapphire, AR Coated Water-resistant