A sophisticated mechanical self-winding El Primero 8800-calibre movement, equipped with a unique gyroscopic system that guarantees the horizontal position of the regulating organ at all times, equips the new Defy Xtreme Zero-G (zero gravity) by Zenith. This model has a strong aesthetic impact, characterised by a black titanium case equipped with a crown with a protection system, a helium escape valve at 10 o'clock and a titanium back with an anti-reflective sapphire crystal porthole. On the unique dial made of carbon fibre and aluminium, the hour display is at 11 o'clock, and the escapement on a gyroscopic support at 5 o'clock. The water resistance is remarkable, guaranteed up to a good 100 atmospheres. The bracelet is sporty, again in black titanium with Kevlar side inserts.
