Model : 18K YG Plated Polished SS Case, Black Guilloche Dial with Silver Ring over Hour Indexes Black Printed Roman Markers, Leather strap with Insignia BuckleMovement: Nickle Plated Asian Eta 2892 Automatic Movment, 21J, 28800bph Functions: Hours, Minutes, Seconds Dimensions : Dia 39mm x 7mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Thick 18K Yellow Gold Plating ... 5 mils Back : Display Caseback With Detail Engraving at Case Rims Crown : One-piece Pull out crown with o ring Crystal: Sapphire crystal Water-resistant