Academy Tourbillon & Perpetual Calendar

Caliber El Primero 4033
Automatic chronograph movement with Tourbillon & Perpetual calendar
14 1/4``` caliber. Diameter : 32.50 mm. Height : 8.60 mm. 429 components.
36'000 vibrations per hour
Power reserve over 55 hours
35 jewels
Measures short time intervals to a 10th of a second
Automatic winding in both directions
Central rotor on ball bearings
22-carat rose or white gold oscillating weight with "Grain d'orge" guilloché pattern

Functions Hour and minutes in the center
Small seconds-hand & Calendar indicator at 9 o'clock
Tourbillon :
· The carriage is positioned at 11 o'clock
· The carriage makes 1 turn per minute
Perpetual calendar :
· Date at 9 o'clock
· Days at 3 o'clock
· Month and leap year at 6 o'clock
Chronograph :
· Central seconds-hand
· 30-minute counter at 3 o'clock
· 12-hour counter at 6 o'clock

Case 18-carat rose gold
18-carat rose 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 Silvered hand-made guilloché dial with "Grain d'Orge" pattern
18-carat rose gold hand-mounted applique indexes
Three dimensional indexes in progressive size

Hands 18-carat rose gold faceted hands

Strap Handmade black alligator leather strap lined with silky Alzavel calfskin

Buckle 18-carat rose gold triple folding buckle stamped with ZENITH star on the cap