Model : 18K Rose Gold Plated Brushed Stainless Steel Casework, Black Checkered Dial , Steel Stick Luminous Markers on 18K Rose Gold Plated Brushed Stainless Steel Link Bracelet With Insginia Single Fold Over Deployant Clasp Movement: Japanese Os20 Quartz Chronograph Movement Functions: Hours, Minutes, Date ( Set via Crown), Sec ( at 6.00 Subdial) 24Hours Indicator (at 3.00 subdial) Chronograph ( Min Counter at 9.00) Dimensions : Dia 41.5mm x 11.5mm ThkMaterial : 1 piece forged case construction, solid 316 stainless steel, Thick 18K Rose Gold Plating ...5 Mils Back : Solid Caseback with detail engraving on case rims Crown : One-piece Pull out crown with o ring Crystal: Sapphire crystal