Model : 18K Rose Gold Plated Stainless Steel Polished Casework , Diamond Crested Bezel, White or Black Dial ,, Steel Sticks Markers, Leather Strap(Choice of Black and Brown) with Tang Buckle clasp Movement: Asia 7750 Working Chronograph movement, 28800bph , Insignia Rotor Functions: Hours, Minutes, Date ( at 4.30) Seconds : Running Secs at 9.00 subdial, Chronograph : 12.00 subdial - minute counter, 6.00 subdials, hour counter 2.00 pusher - start/stop chrono, 4.00 pusher - reset Dimensions : Dia 40mm x 16mm Thk Material : 1 piece forged case construction, solid 316 Steel Back : Display case back with Detail Engraving Crown : One-piece Screw down crown with o ring Crystal: Sapphire crystal, with AR coating Water-resistant