The Zenith El Primero Chronomaster Power Reserve utilizes a 42mm case containing the caliber 4021 El Primero movement. This mechanism features a silicon lever and escape-wheel, visible through the exhibition case back and a dial aperture. A power reserve indicator 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
Material
Rose Gold
Glass
Sapphire
Thickness
14.05 mm
Diameter
42.00 mm
Water Resistance
100.00 m
Dial Color
Silver
