RM056-02 GLASS CASEWORK TOURBILLON SAPPHIRE LIMITED EDITION <<Model : Full See Thru Glass Casework Case, Skeleton Dial, Lume Dot Hour Markers on Rubber Strap with Tang Buckle, Blue Inner Bezel Movement: Custom Modified Asian 23J Handwind MovementFaux Decorated Skeleton Decorated Movt BridgesFunctions: Hours, Minutes, Seconds Dimensions : Width 42mm x Height 50.5mm x 17.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steelBack : Display case back with Detail Serial Engraving Crown : One-piece Pull Out Crown with o ring Crystal : Sapphire Crystal Water-resistant