Sinn Day Date Chronograph 256 Men's Watch. 40mm Stainless Steel case. Stainless Steel Unidirectional bezel. Black dial with Luminous Steel hands and Arabic numeral hour markers. Minute markers on the outer dial. Date display at the 3 o'clock position. Stainless Steel Bracelet with Flip-lock Clasp. Will fit up to a 6.5-inch wrist. Sapphire Crystal, Stainless steel case back. Calibre 7750 Automatic self-winding movement with a 54-hour power reserve. This watch is backed by our two year warranty.