Ruggedness to the extreme.
The DEFY Extreme combines the cutting-edge performance of the El Primero 21 high-frequency 1/100th of a second chronograph calibre with a body that exudes robustness, resilience and a penchant for exploring new horizons.
The El Primero 21 is the culmination of over 50 years of perfecting the automatic high-frequency chronograph. Equipped with two regulating organs and escapements - one beating at 5Hz for timekeeping, and the other at an incredible 50Hz to offer a true 1/100th of a second chronograph function.
The watch comes with a titanium strap as well as a rubber strap and a Velcro strap.
Frequency: 36,000 VpH (5Hz), Power Reserve: min 50 hours