Model : Polished Stainless Steel Case, Black Dial, Steel Numeral Markers on Leather Strap Insignia Buckle Movement: Asian 2813 Automatic Movement With Calendar Complications, 23J Functions: Hours, Minutes, Secs, 24 Hour Indicator Day and Date (Set via Pusher) Day/Night Day Phase Subdial at 6,00 Note : Day, Date and Day/Night Phase / 24 Hour Indicator will advance Automatically with Time Dimensions : Dia 42mm x 13mm Thk Material : 1 piece forged case construction, solid 316 stainless steel Back : Display Caseback with Detail Engraving Crown : One-piece Pull Out crown with o ring Crystal: Sapphire Crystal Water-resistant