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  • Technical
  • Chronograph

Defy El Primero 21

Zenith 2017

ref. 24.9000.9004/78.R582
Men's

Defy El Primero 21 square

Zenith introduces the El Primero Chronograph calibre for the 21st century, accurate to 1/100th of a second and largely inspired by the Mikro range, previously developed by LVMH stablemate TAG Heuer. Zenith has achieved this level of precision by using a dual chain structure, i.e. two regulators in carbon-matrix carbon nanotube composite, an innovative and patented material that is unaffected by temperature change and also resistant to magnetic fields. The first regulating system, for the timekeeping functions, runs at 36,000 vib/hour, a nod to the original El Primero from 1969. Its counterpart runs at ten times that to measure hundredths of a second. Transposed to the dial, this gives a central hand that makes one sweep per second. Highly anticipated, this new execution marks a new era for the world's most precise chronograph.

 

 

Function

  • Function
    Hours, Minutes, Small seconds

Complications

  • Elapsed time measurement
    Double pusher chronograph
  • Display
    Power-reserve indicator

Movement

  • Movement name
    El Primero 9004
  • Energy supply
    Self-winding
  • N° of components
    203
  • N° of jewels
    53
  • Power reserve
    50 hours
  • Vibrations
    360000
  • Form
    Round
  • Height/thickness
    7.90 mm
  • Diameter
    32.80 mm

Case

  • Form
    Round
  • Height/thickness
    14.50 mm
  • Diameter
    44.00 mm
  • Back
    Sapphire
  • Water-resistance
    100 m

Strap

  • Material
    Alligator
  • Colour
    Black

Characteristics

  • Certifications
    COSC