Zenith Defy Defy El Primero 21 Rose Gold / Skeleton / Alligator

Reference 18.9000.9004/71.R585

About this watch

The Zenith Defy El Primero 21 is a stunning masterpiece that perfectly marries art and engineering. With its unique design and cutting-edge technology, this watch isn't just a tool for telling time; it's a statement. The rose gold case exudes luxury and elegance, while the skeletonized dial reveals the intricate mechanics that make this watch tick. At the heart of the Defy El Primero 21 is the Zenith caliber El Primero 9004, which is nothing short of a technological marvel. This self-winding movement is capable of measuring time with astonishing accuracy, down to 1/100 of a second. The chronograph has a dedicated power reserve of 50 minutes, wound by hand, and features two balance springs made from high-tech 'carbon-matrix carbon nanotube composite.' With a diameter of 44.00 mm and a height of 14.50 mm, the Defy El Primero 21 is a substantial watch that commands attention. The case is paired with an exquisite alligator leather strap that enhances its luxury appeal and adds to the overall comfort.
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Key Features

  • Rose gold case
  • Skeletonized dial
  • Zenith caliber El Primero 9004 movement
  • Chronograph function
  • Two balance springs
  • 100m water resistance

Specifications

Brand
Zenith
Family
Defy
Model
Defy El Primero 21 Rose Gold / Skeleton / Alligator
Reference
18.9000.9004/71.R585
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph
  • Chronometer, Power Reserve Indicator
Case
Rose Gold 44mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Zenith Defy Skeleton White Ceramic Box & Papers

Zenith Defy Skeleton White Ceramic Box & Papers

The Zenith Defy Classic in full white ceramic is a modern icon that blends cutting-edge design with technical mastery, featuring an openworked concept and a skeletonized dial revealing the Elite 670 automatic movement. The watch has a 41mm case and houses a beautifully finished movement with blackened bridges and luminous hands for contrast and legibility.

  • Condition: Great pre-owned condition
  • Case diameter: 41mm
  • Movement: Elite 670 automatic movement
Posted at
Feb 18, 2026, 10:39 AM
Active
[WTS] Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

  • Model type: Defy Skeleton Chrono
Posted at
Feb 17, 2026, 4:45 PM
Active
[WTS] Zenith Defy Gauss 28800, 39mm, circa 1970

Zenith Defy Gauss 28800, 39mm, circa 1970

Zenith - Defy Gauss 28800 · $1,800
This Zenith Defy Gauss is a high-beat rate watch from the 1970s, specially designed to withstand high radiation and magnetic fields.

  • Case size: 39mm
  • Production number: Fewer than 600 made
  • Dial color: Blue
Posted at
Feb 17, 2026, 4:21 AM
Active
[WTS] Zenith Defy Skyline Skeleton Black Ceramic

Zenith Defy Skyline Skeleton Black Ceramic

For sale is a Zenith Defy Skyline Skeleton Black Ceramic watch, featuring a full ceramic construction with 100M water resistance and an El primero movement beating at 5Hz.

  • Condition: like new
  • Water resistance: 100m
  • Movement type: El primero
  • Beats per hour: 36000
Posted at
Feb 15, 2026, 1:02 PM
Active
[WTS] Zenith Defy El Primero Sunray Blue Extreme Diver FULL SET Ref 95.9601.3620/51.I301

Zenith Defy El Primero Sunray Blue Extreme Diver FULL SET Ref 95.9601.3620/51.I301

A modern iteration of the Zenith Defy El Primero diver, featuring a unique blue starry sunray pattern on its dial. The watch is powered by an iconic automatic cal 3620 CS movement and comes in a 42.5MM titanium case.

  • Condition: Pre-owned, appears mint
  • Case Size: 42.5mm diameter
  • Movement Type: automatic cal 3620 CS
Posted at
Feb 15, 2026, 12:20 PM
Active
[WTS] 2020 Zenith Defy El Primero 21 Skeleton Chronograph – Ref. 49.9000.9004/78.R582 – Full Set – Excellent Condition – $7,750 Shipped

2020 Zenith Defy El Primero 21 Skeleton Chronograph – Ref. 49.9000.9004/78.R582 – Full Set – Excellent Condition – $7,750 Shipped

2020 Zenith Defy El Primero 21 Skeleton Chronograph, a high-performance chronograph showcasing Zenith’s innovative 1/100th-of-a-second movement, featuring an openworked dial and lightweight titanium case.

  • Condition: Excellent
  • Case Size: 44mm diameter
  • Case Material: Titanium
  • Movement Type: Automatic chronograph (El Primero 21, 1/100th second)
Posted at
Feb 12, 2026, 10:02 PM
Active
[WTS] Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

a Zenith Defy Skeleton Chrono is being listed for sale

  • Model: Defy Skeleton Chrono
Posted at
Feb 9, 2026, 3:03 PM
Active
[WTS] Zenith Defy Skyline Skeleton Black Ceramic

Zenith Defy Skyline Skeleton Black Ceramic

The Zenith Defy Skyline Skeleton is a high-end watch featuring a full ceramic construction, skeletonized dial, and El primero movement. It has a 100M water resistance and a power reserve of 55 hours.

  • Condition: like new
  • Case Material: Black Ceramic
  • Water Resistance: 100M
  • Movement Frequency: 5Hz (36,000 vibration per hour)
Posted at
Feb 8, 2026, 3:34 PM
Active