The Zenith El Primero Chronomaster Power Reserve features a 42mm case containing the El Primero caliber 4021 movement, equipped with a silicon lever and escape-wheel. These components are visible through the exhibition case back and a dial aperture. A power reserve display is positioned between the 5 and 8 o'clock markers.
Movement Type
Automatic Chronograph
Caliber
El Primero 4021Jewels
39
Reserve
50
Frequency
36000
Hands
Small Seconds
Shape
Round
Glass
Sapphire
Thickness
14.05 mm
Diameter
42.00 mm
Water Resistance
100.00 m
Dial Color
Silver
