The Zenith Defy El Primero 21 Ultraviolet is powered by an automatic movement encased in a 44mm microblasted titanium case. The ultraviolet purple openwork dial is covered by sapphire crystal. It showcases a chronograph function and chronograph power reserve. The black rubber strap is accented by an ultraviolet purple Cordura effect. It includes a titanium double folding clasp. The watch is water resistant to 100 meters.