Annual Calendar associated with the legendary El Primero chronographArabic numerals entirely made of SuperLuminovaCase-back engraved with Zenith aviation instruments
MovementEl Primero 4054, Automatic
Caliber13¼``` (Diameter: 30 mm)
Frequency36,000 VpH (5 Hz)
Power reservemin. 50 hours
FinishingOscillating weight with “Côtes de Genève” pattern
Hours and minutes in the centre
Small seconds hand at 9 o'clock
Day/month indicator at 3 o'clock
Date indication at 6 o'clock
Central chronograph hand
60-minute counter at 6 o'clock
Case, dial and hands
MaterialTitanium case with rose gold bezel, horns, push-pieces and crown.
CrystalDomed sapphire glass with anti-reflection treatment on both sides
Case-backCase-back engraved with Zenith aviation instruments
Dials and countersMatte black
Hour-markersArabic numerals in SuperLuminova SLN C1
Strap and clasp
Alligator leather strap with protective rubber lining
Titanium pin buckle
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