Model : Polished Stainless Steel Case, Black Dial Steel Sticks Markers, Leather strap with Insignia BuckleMovement: Asian Automatic 2813, 21J, Calendar Complications Functions: Hours, Minutes, , Date )Retrograting Indicator over Half Fan Dial, Day and Month (Set via recess pushers on Case side) Day and Date will advance automatically with time, Month Needs Manual Adjustment Dimensions : Dia 43mm x 13.5mm Thk Material : 1 piece forged case construction, solid 316 stainless steel, Back : Solid Caseback with Graphic and Serial Engraving Crown : One-piece Pull out crown with o ring Crystal: Synthetic Sapphire, Water-resistant