Zenith Tourbillon Chronograph El Primero Automatic

ZENITH’s new horology marvel houses a challenging high-frequency automatic mechanical movement, the El Primero 4035 D, which combines tourbillon, chronograph and calendar functions. Probably, the only watch in the world with such a complex and high frequency mechanism, the Zenith Tourbillon Chronograph El Primero Automatic also aims to attain the most precise chronometric performance possible.

Its innovative tourbillon shows off its rotating carriage in the upper left-hand part of the dial, including a built-in calendar. This asymmetry aesthetically highlights the tourbillon’s mechanism, visible through an opening in the dial, while maintaining fine proportions and elegant lines. The date is displayed – in a patented system – by means of a disk around the circumference of the carriage.

To enhance the performance of El Primero chronograph’s automatic calibre that beats inside this timepiece, ZENITH designers have developed an in-line escapement that shifts the balance spring to the outer edge of the rotating carriage. The result of is a tourbillon and a high-frequency automatic chronograph with over 50 hours of power reserve. The calibre, which is 1 mm thicker than the original El Primero,  is composed of 381 components, including 67 for the rotating carriage.

This is the only tourbillon on the market that operates at high frequency. The new Zenith tourbillon comes in two models: steel or rose gold, with counters at three and six o’clock. The seconds hand in the tourbillon carriage rotates with it in 60 seconds.

The case’s middle is formed using a double stamping process, which creates one curve at a time along the length and depth. The olivette makes it easier to grasp the crown. The highly complex calibre can be admired through the Sapphire glass case back.

Technical details

Model: Zenith Tourbillon Chronograph El Primero Automatic


El Primero 4035 D, Automatic
Height: 7.55 mm
Components: 381
Jewels: 35
Frequency: 36’000 VpH – (5 Hz)
Power reserve: min. 50 hours
Finishings: 18 carat Gold or metal oscillating weight with «Côtes de Genève» pattern.
Caliber: 16 ½ “` (Diameter : 37 mm)

Hours and minutes in the center

-Central Second hand
-30-minute counter at 3 o’clock
-12-hour counter at 6 o’clock

-The carriage is positioned at 11 o’clock
-The carriage makes one turn per minute
-The small second is on the carriage
-The date is positioned around the carriage

Material: Rose Gold or Stainless Steel
Crystal: Box-form Sapphire glass with anti-reflection treatment on both sides
Case-back: Transparent Sapphire glass
Water-resistance: 10 ATM
Case Diameter: 44 mm
Opening Diameter: 39 mm

Black Sunray or Silver Sunray
Hands: Rhodium Faceted with Superluminova SLN C1 or Gold plated for Rose Gold version
Indexes: Rhodium Faceted with Superluminova SLN C1 or Gold plated for Rose Gold version

Alligator Leather strap lined with a Rubber protection available also on triple folding buckle

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