Defy Classic Chrono Aero
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Caliber
El Primero 4000 SC
Automatic chronograph movement
13 _''' caliber. Diameter 30 mm. Height : 6.50 mm. 278 components.
Chronograph bridge, balance & pallet cocks 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
Functions
Hours and minutes in the center
Small seconds counter at 9 o'clock
Date at 4 _ o'clock
Central seconds-hand for the chronograph
30-minute counter at 3 o'clock
12-hour counter at 6 o'clock
Case
Brushed stainless steel case. Diameter: 46.5 mm
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
Dial
Silver or black fully guilloché dial
Applied rhodium numerals and indexes
Crystal
Sapphire glass, 4 mm thick, with anti-reflective coating on both sides
Magnifying lens over the date window at 4 _ o'clock
Hands
Rhodium-plated faceted luminous hands with white Superluminova inserts
Hour & minute "skeleton" rhodium hands
Bracelet
Stainless steel bracelet with unique pattern that echoes the dial guilloché, and brushed steel triple folded clasp
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