Welcome to my Top Swiss Chronographs Boutique: Zenith SA is a Swiss luxury watchmaker. The company was started in 1865 by Georges Favre-Jacot in Le Locle in the canton of Neuchâtel and is one of the oldest continuously operating watchmakers. Favre-Jacot invented the concept of "in house movements", believing that only through control of the entire watchmaking process could the highest quality be achieved. Zenith was purchased by LVMH in November 1999, becoming one of several brands in its watch and jewelry division, which includes TAG Heuer and Hublot. Benoit de Clerck is the company's current president and CEO. Zenith has garnered more than 1,500 international watchmaking awards. Living legend among chronograph movements, the El Primero was introduced in 1969 as world’s first high-frequency automatic chronograph movement. Offered Chronomaster El Primero: one of world's best watches; admire this impeccable mechanism, the sapphire case back allows you to enjoy the spectacle of finest watch art quality! Movement: - self-winding in-house caliber El Primero 4021 - base: Zenith El Primero 400 - 39 jewels - frequency: 36,000VpH (5Hz) - power reserve: 50 hours - column wheel chronograph - 248 components Case: - titanium - 45mm excl. crown, 48mm incl. - 14,2mm thick - length: 53mm lug to lug - anti-reflective sapphire crystal Case-back: - exhibition - sapphire Crown: - titanium - push/pull with raised logo star - two polished chronograph pushers Bezel: - titanium - fixed - multilayer Dial: - silver color - special trim in carbon fiber style - raised Roman numeral hour markers - Zenith logo at 01:00 o'clock - four sub-dials displaying: 30 minute counter at the 03:00 o'clock power reserve indicator at the 06:00 o'clock with golden hand opened dial at 10:00 o'clock showing the heart of El Primero movement small second hand at 09:00 o'clock - polished central chronograph second hand - very chic and special Strap: - brand new black leather, alligator grain on cow - length: ca. 22cm incl. wristwatch itself - width: 22mm by lugs, 18mm by clasp Double-folding "butterfly" clasp: - titanium - with logo star and "Zenith" inscription Weight: 96 grams Water resistance: 3ATM/30meters/100feet, not suitable for swimming and diving High recognition value. Distinctive design. Chic original "Zenith" heavy wooden watch box. Distributor's stock: the warranty card isn't stamped (see pics). For watches older than two years, “original warranty” means that the warranty card is included. My personal authenticity and quality warranty: you will get warranty card (as pictured), fully completed, stamped and signed. General professional pre-sale service was made in October 2025: the watch is keeping good time and working perfectly. Excellent condition, never worn: the wristwatch comes from luxury watch-shop showcase; that's why the strap is replaced with brand new one: leather straps often suffer from temperature in shop windows due to powerful spotlights. Insured, registered shipping worldwide with DHL Express: it’s not cheap, and yet fast and reliable, two days in Europe, three days for the rest of this world. What you see in my pics is what you get. NO EXTRA COSTS for EU Buyers!