ChronoMaster Open El Primero Grande Date

• Caliber NEW El Primero 4039 Automatic chronograph movement with Grande Date and Power reserve display 13``` caliber. Diameter : 30.50 mm. Height : 9.05 mm. 331 components. 36'000 vibrations per hour Power reserve over 50 hours 41 jewels Measures short time intervals to a 10th of a second Automatic winding in both directions Central rotor on ball bearings 22-ct Gold or metal oscillating weight with or "Côtes de Genève" pattern
• Functions Hours and minutes in the center Small seconds-hand at 9 o'clock Chronograph: " Central seconds-hand " 30-minute counter at 3 o'clock Patented 3-Disc Grande Date over 2 o'clock Power Reserve indicator from hour axis
• Case Rose gold or Stainless Steel Rose gold or Stainless Steel ZENITH push buttons and crown XXT version: Diameter : 45 mm / Diameter opening : 35 mm T version: Diameter : 40 mm / Diameter opening : 29.9 mm Curved sapphire glass with anti-reflection treatment on both sides Transparent sapphire case back Water-resistance up to 30 meters
• Dial Black or silver "soleillé" guilloché dial with hand-mounted applique indexes & numerals Integrated TR90 plates on dial opening and power reserve indicator
• Hands Rhodium faceted hands in black dial version Rose gold or Ruthenium hands in silver dial version Rose Gold Power Reserve hand
• Strap Integrated handmade black alligator leather strap lined with silky Alzavel calfskin
• Buckle Rose Gold or Stainless Steel ChronoMaster triple folded buckle with ZENITH Star on the cap

• Caliber: New El Primero 4021 movement. Automatic chronograph movement 13```caliber. Diameter 30 mm. Height : 6.50 mm. 39 jewels. 36,000 vibrations per hour. Power reserve over 50 hours. Measures short time intervals to a 10th of a second. Central rotor on ball bearings. Automatic winding in both directions. 22-carat rose gold oscillating weight with "grain d'orge" guilloché pattern, or bi-metal with "Côtes de Genève" pattern.
• Functions: Opened dial at 10 o'clock showing the hearth of El Primero. Hours and minutes in the center. Small seconds-hand at 9 o'clock with a 3-branched hand. Power reserve indicator at 6 o'clock. Center seconds-hand30-minute counter at 3 o'clock. Tachometric scale on the gold version
• Case: 18-carat rose gold or stainless steel.ZENITH push buttons and crown in 18-carat rose gold or stainless steel. Diameter 45 mm. Diameter opening : 35 mm. Curved sapphire glass with anti-reflection treatment on both sides. Transparent sapphire case back. Water-resistant up to 30 meters
• Dials: Silvered with "grain d'orge" guilloché pattern, or powdered black dial
• Hands 18-carat rose gold or rhodium hand-mounted applique roman numerals
• Strap 18-carat rose gold or rhodium faceted hands. Power reserve hand : ruthenium on gold version, yellow gold on steel version. Buckle Black alligator leather strap, hand-stitched tone-in-tone, lined with silky Alzavel calfskin. 18-carat rose gold or stainless steel ChronoMaster triple folding buckle stamped with the historical ZENITH star on the cap