ZENITH EL PRIMERO CHRONOMASTER REF. 30.0240.410 YELLOW GOLD WRISTWATCH ZENITH EL PRIMERO CHRONOMASTER IN GOLD REF. 30.0240.410 18kt yellow gold case, snap-in case back with visible movement, olive chrono buttons, crown marked, white dial, black graphics, applied Roman numerals, three counters, moon phases, double window date display at twelve o'clock with day of the week and month, seconds at nine o'clock, date window between four and five o'clock, self-winding movement cal 410, brown leather strap with non-original metal buckle, mineral glass, gr. 88. Diam. mm 40