El Primero Chronograph

Zenith El Primero Chronograph 02.0360.400

The Zenith El Primero Chronograph – Ref. 02.0360.400 honors the world’s first automatic chronograph calibre through a classic tri-compax layout displayed on a pristine white dial, housed within a distinctive 40 mm stainless steel tonneau-shaped case. This early 1990s reference captures Zenith’s pioneering spirit, merging high-frequency precision with timeless sport-luxury appeal.

The stainless steel case features a fixed tachymeter bezel, sapphire crystal, and exhibition caseback. The white dial is arranged in a traditional tri-compax format with 60-second counter at 6 o’clock, 30-minute counter at 3 o’clock, and 12-hour counter at 9 o’clock, accompanied by a date window and luminous elements for clear legibility.

At its heart beats the legendary El Primero Calibre 400, operating at 36,000 vibrations per hour (10 beats per second), delivering exceptionally smooth chronograph operation and a power reserve of approximately 50 hours. The high-frequency architecture remains a defining milestone in modern horology.

Designed for enthusiasts who appreciate historic mechanical achievements, this reference combines collectible character with enduring performance.

Key Specifications

• Reference: 02.0360.400

• Collection: El Primero

• Case Material: Stainless steel

• Bezel: Fixed tachymeter

• Diameter: 40 mm

• Thickness: approx. 12 mm

• Dial: White tri-compax layout

• Calibre: Zenith El Primero 400, automatic

• Frequency: 36,000 vph (5 Hz)

• Functions: Hours, minutes, small seconds, chronograph (30-min, 12-hour), date

• Power Reserve: approx. 50 hours

• Water Resistance: 50 meters (5 ATM)

• Bracelet: Stainless steel bracelet