Debuting at BaselWorld 2017, the Zenith Defy El Primero 21 revitalized the Defy collection by utilizing the El Primero 9004 movement, which tracks intervals as small as 1/100th of a second. The 2021 reference 97.9001.9004/81.R946 model incorporates a sandblasted titanium case. It mirrors the 2020 Ultraviolet edition but utilizes 'Ultra' blue accents across the dial, movement, and strap.
Movement Type
Automatic Chronograph
Caliber
El Primero 9004Jewels
53
Reserve
50
Frequency
36000
Hands
Small Seconds
Shape
Round
Lug Distance
23.00 mm
Material
Titanium
Glass
Sapphire
Thickness
14.50 mm
Diameter
44.00 mm
Water Resistance
100.00 m
Dial Color
Skeleton
