Mens Zenith Class El Primero Watch, stainless steel case (40mm diameter, 7.85mm thickness) with see-through sapphire crystal caseback, crocodile leather or rubber strap with stainless steel triple-folding clasp, silver (#01-C492) or black (#21-C492) dial with silver chronograph sub-dials, silver hands, and applied silver Arabic numerals, date calendar between 4 and 5 o'clock, C.O.S.C. certified El Primero #4002 self-winding mechanical movement with chronograph functions, scratch-resistant sapphire crystal, water-resistant to 50 meters.