Mens Zenith Port Royal El Primero Watch, rectangular stainless steel case (51mm length, 36mm width) with see-through sapphire crystal caseback, leather or rubber strap with triple-folding clasp, silver (#02-C507) or black (#22-C503) guilloche dial with silver hands and painted luminous Arabic numerals, date calendar between 4 and 5 o'clock, sub-seconds dial at 9 o'clock, El Primero #400 self-winding mechanical movement with chronograph functions, scratch-resistant sapphire crystal, water-resistant to 50 meters.