Displayed: Grande Chronmaster Open Concept
Additional Images
Pictured
- Grande Chronmaster Open Concept
Caliber
- El Primero 4021 J1 (T size) / 4021 J2 (XXT size)
- Automatic chronograph movement
- 13``` caliber. Diameter 30.50 mm. Height : 7.75 mm. 248 components
- 36,000 vibrations per hour
- Power reserve over 50 hours
- 39 jewels
- Measures short time intervals to a 10th of a second
- Automatic winding in both directions
- Central rotor on ball bearings
- Heavy metal oscillating weight with “Côtes de Genève” guilloché pattern
Functions
- Hours and minutes in the center
- Small seconds-hand at 9 o’clock with a 3-branched hand
- Power reserve indicator from hour axis
- Central seconds-hand
- 30-minute counter at 3 o’clock
Case
- Ti 2 Black Titanium case
- Ti 2 Black Titanium 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
- Transparent dial in TR90, Open at 10 o’clock & showing the heart of EL PRIMERO
- Transferred numerals, applied indexes and ZENITH Star
Hands
- Hours and Minutes hands in black varnish
- 18-carat rose gold power-reserve
Strap
- Handmade 3K Carbon fiber integrated strap
Buckle
- Ti 2 Black Titanium ChronoMaster triple folded buckle
Warranty
Unlike E-tailers that only provide in-house warranties, Topper Jewelers is a full service authorized dealer that offers the Zenith Manufacturer's Warranty.