Maker: Zenith
Model: El Primero Original 1969
Material: Stainless Steel
Dimensions: 38mm diameter; 12mm thickness
Sapphire Crystal: Yes, domed with double anti-reflective treatment
Caliber: El Primero 4069 adjusted and regulated to COSC chronometer standards
Bracelet/Strap: Zenith black crocodile,
Lug Width: 19mm
Box/Papers: Yes, including two-year factory warranty and individual COSC certificate
Caliber 4069 Details
Components: 254
Jewels: 35
Frequency: 36,000 VpH (5 Hz)
Power-reserve: min. 50 hours
Finishes: Oscillating weight with Côtes de Genève motif
Running seconds at nine o'clock
Central chronograph seconds / 30-minute counter at three o'clock