Model : 18K Rose Gold Plated Brushed Stainless Steel Casework, PVD Black Coated Bezel, Black Perforated dial, on Rubber strap with Insignia strap with Deloyant Clasp Movement: Japanese OS 20 Working Chronograph Quartz Movement Functions: Hours, Minutes, Seconds : Running Secs at 3.00 subdials Date at 6.00 : Adjustment via Crown Chronograph : 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 44mm x 18.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Thick 18K Rose Gold Plating... 5 mils Back : Close case back Crown : One-piece solid pullout crown with o ring Crystal: Sapphire crystal Water-resistant