ZENITH REF. 96.0529.4021.DEFY XTREME SEA CHRONOGRAPH TITANIUM.Zenith, Defy Xtreme, High Pressure Resistant Chronograph, 1000 M For.Xtreme Condition Use, El Primero, Ref. 96.0525.4021. Made in circa 2008..Fine, large, self-winding, high-pressure water resi
C. Three-body, black PVD coated, graduated unidirectional revolving.black bezel with titanium star and baton markers, concave lugs.screwed-down case back, screwed-down winding crown protected by.a cage, screwed-down push buttons with carbon-fiber inserts, helium.escape valve at 10, antireflective sapphire crystal..D. Black, partially skeletonized carbon-fiber center, outer minute divisions.alloy-wheel form subsidiary dials for the seconds and 30-minute.register. Luminous skeletonized black baton hands..M. Cal. 4000 SX, rhodium-plated, 31 jewels, straight-line lever escapement.monometallic balance, shock absorber, self-compensating.flat balance spring, chronograph bridge and balance cock made from.a special shock absorbing alloy (Zenithium), oscillating WEIGHT with.carbon-fiber inserts.