For its leading sports watch line, Zenith has excelled itself. The original lines, avant-garde technology and unique style of the DEFY XTREME OPEN make this the chronograph of the future. Thanks to the combination of titanium, Kevlar®, TR90 and a new alloy, Zenithium, it is unbreakable and water-resistant to 1,000 metres. Its 4021 SX movement has been redesigned to meet the most extreme conditions. It offers power, virility and modernity for those who live in the fast lane.
 
SPECIFICATIONS
CASE
Black titanium, 46.5 mm
Unidirectional, rotating graduated bezel in black titanium, decorated with 4 satin-finished titanium screws 
Curved sapphire crystal 
Screw-down back, guilloché carbon fibre motif
Water-resistant to 1000 metres
 
DIAL
Hesalite glass, carbon fibre layer and silver-coated dial flange
9-armed silvered helice revealing the heart of the movement
Luminescent rhodium-plated hands
 
MOVEMENT
Automatic, El Primero 4021 SX, calibre 13''', 248 components
Exclusive Zenithium Z+ bridges (anti-shock)36,000 v/h, 50-hour power reserve, 39 jewels
Rotor decorated with carbon inserts
 
FUNCTIONS
Hours, minutes, seconds, chronograph, power reserve
 
BRACELET/STRAP
Steel resistant to high temperatures, lateral Kevlar® inserts, triple folding clasp