Model : Full Glazed Ceramic Caseset, Black Ceramic Coated Dial, Numeral Markers, Unidirectional Diver Bezel, Full Ceramic Link Bracelet with Spring Loaded Double Deployant Clasp Movement:Asian Flying Tourbillon Manual Handwind Movement, Insignia Engraving on Bridges Functions: Hours, Minutes,Seconds (Exposed Rotating Tourbillon Feature) Dimensions : Dia 41.5mm x 13.5mm ThkMaterial: 1piece forged case construction, Full Ceramic Back: Solid Caseback With serial engraving Crown: One-piece Pull out crown with o ring Crystal:Sapphire Crystal, AR CoatedWater-resistant