Defy Classic Chrono Aero

Case material
Bracelet strap

CaliberEl Primero 4000 SC
Automatic chronograph movement
13 ¼''' caliber. Diameter 30 mm. Height : 6.50 mm. 278 components.
Balance bridge in shock-absorbing Zenithium Z+
Incabloc® anti-shock device
36'000 vibrations per hour
Power reserve over 50 hours
31 jewels
Measures short time intervals to a 10th of a second
Automatic winding in both directions
Central rotor on ball bearings
Full Tungsten oscillating weight with guilloché pattern

FunctionsHours and minutes in the center
Small seconds counter at 9 o'clock
Date at 4 ½ o'clock
Central seconds-hand for the chronograph
30-minute counter at 3 o'clock
12-hour counter at 6 o'clock

CaseBrushed stainless steel case
Case diameter : 46.5 mm (XT) or 43 mm (T)
Screw-in push buttons with specific guilloche pattern
Screw-in crown engraved with ZENITH star
Graduated unidirectional rotating bezel, with stainless steel decorative screw-heads & satin-finished cone-shaped indexes
Transparent sapphire case back
Screw-in case back
Water-resistance up to 300 meters

DialSilver or black fully guilloché dial
Applied rhodium numerals and indexes

CrystalSapphire glass, 3 mm thick, with anti-reflective coating on both sides
Magnifying lens over the date window at 4 ½ o'clock

StrapsBlack or brown handmade alligator leather strap
Black or brown rubber strap

BraceletBrushed high-density stainless steel bracelet

Buckle Brushed stainless steel tongue buckle for rubber & leather straps
Brushed stainless steel triple-folded clasp for the bracelet