Mens Zenith Port Royal Grande Date Watch, rectangular-shaped stainless steel case (51mm length, 36mm width) with see-through sapphire crystal caseback, alligator leather strap with triple-folding clasp, black (#21-C503) or sand-colored (#01-C507) dial with silver hands and painted luminous Arabic numerals, double date calendar window between 4 and 5 o'clock, C.O.S.C. certified El Primero #4010 self-winding mechanical movement with chronograph functions, scratch-resistant sapphire crystal, water-resistant to 50 meters.