RM022 AERODYNE DUAL TIME ZONE <<Model : )Sandblasted Finished Stainlesss Steel Engineered Case, Skeleton Dial, Printed Arabic Numeral Markers on Rubber Strap with Tang Buckle, Black Inner Bezel Movement: Custom Modified Japanese Miyota MovementDecorated SkeletonFunctions: Hours, Minutes, Seconds ( Expose Balance at 6.00 as Secs), Duo Time ZoneChronographDimensions : Width 40mm x Height 48mm x 15mm 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