Zenith Grande Chronomaster XXT Quantieme Perpetuel El Primero

Caliber El Primero 4003. Automatic chronograph movement with perpetual calendar.COSC certified. 13 1/4 caliber. Diameter:30 mm. Height:8.10 mm. 321 component, 36’000 vibrations per hour. Power reserve over 50 hours. 31 jewels. Measures short time intervals to a 10th of a second. Automatic winding in both directions. Central rotor on ball bearings. 22-carat white gold oscillating weight with "Grain d’orge" guilloché pattern. Functions Hour and minutes in the center. Small seconds-hand at 9 o’clock. Perpetual calendar: Date at 3 o’clock. Moon phases at 6 o’clock. Day at 9 o’clock. Month and leap year at 12 o’clock. Center seconds-hand: 30-minute counter at 3 o’clock, 12-hour counter at 6 o’clock. Tachometric scale on the dial. Case: Platinum 950 PT or platinum "baguette" set (60 diamonds, 5.4-ct). 18-carat white gold ZENITH push buttons and crown. Diameter:45 mm. Diameter opening : 35 mm .Curved sapphire glass with anti-reflection treatment on both sides
Transparent sapphire case back. Water-resistance up to 30 meters. Dial: Gold dial or gold mother of pearl dial on set version. Silvered hand-made guilloché dial with "Grain d’Orge" pattern. 18-carat white gold hand-mounted applique indexes or hand-mounted diamonds indexes (11 diamonds, 0.3-ct). White gold hand-mounted appliqué indexes. Hands: 5 white gold faceted hands. 4 baton hands. Strap: Black alligator leather strap, hand-stitched tone-in-tone, lined with silky Alzavel calfskin. Black leather strap with satin stripe on set version. Buckle: Platinum ChronoMaster triple folding buckle stamped with the historical ZENITH star on the cap.

http://www.zenith-watches.com