Zenith Class El Primero Moonphase Watch

The Zenith Class El Primero Moonphase watch is a creation of horological luxury that projects classical elegance and mechanical sophistication. A fine demonstration of the watchmaking mastery of the house of Zenith, this appealing timepiece offers up an advanced column-wheel chronograph, united to a classical complete calendar mechanism with a moonphase display.

The case of the Zenith Class El Primero Moonphase is hewn from stainless steel or 18K gold, and processed with great care; the bezel is richly polished, echoing the texture found on the ovoid chronograph pushpieces, and strap lug bevels. Stately serenity defines the silvered dial, with its hobnail central guilloche pattern that embraces the chronograph subdials, and moonphase disc. Day of the week and month are elegantly set below the Zenith logo, and the date display appears in its window between the 4 and 5 o'clock numerals. Scratch-resistant protection is provided by a gently curved sapphire crystal which merges beautifully with the profile of the bezel. A sapphire crystal exhibition window in the back of the Zenith Class El Primero Moonphase watch allows the viewer to admire the inner-workings and fine decorative flourishes of the exceptional self-winding Zenith 4100 Caliber movement.

The chronograph, which has both 12-hour and 30-minute counters, is controlled by a column-wheel and allows precise time measurement to within 1/10th of a second; this performance feature shares a common origin with all Zenith El Primero chronographs produced since 1969, and is a result of the exceptionally rapid balance wheel frequency of 36,000 alternations per hour. The elegant complete calendar complication adds attraction and utility, making this movement a true standout of Manufacture excellence. Fully wound, the caliber has an autonomy of approximately 50 hours.

The Zenith Class El Primero Moonphase watch is presented in both 40mm and 44mm sizes, to appeal to the widest array of preferences. All variations are fitted with a luxurious alligator strap, and a triple-deployant clasp in 18K rose gold or steel, signed with the Zenith star insignia. Water resistance is rated for 50 meters.