Model :18K Rose Gold Plated Polished Finish Engineered Stainless Steel Caseset , Black Duo Tier Dial , Black Roman Markers on Leather Strap with Insignia Fold over Clasp, Movement: Asian Flyingman Tourbillon Manual Handwind Movement Functions: Hours, Minutes, Seconds : Expose Balance Wheel and Tourbillon Dimensions : Dia 46mm x 15.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Thick 18K Rose Gold Plating .. 5 mils Back : Display case with Detail Engraving on case rims Crown : One-piece Pull out crown with o ring Crystal: Sapphire crystal, Double Sided AR coated. Water-resistant