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 Classic 95.9000.670/78.M9000 Skeleton Automatic Titanium Bracelet 41mm Full Set

Zenith Defy Classic 95.9000.670/78.M9000 Skeleton Automatic Titanium Bracelet 41mm Full Set

A rugged and modern watch that feels sporty without being bulky, refined without being delicate, with a sharp architectural design and titanium case and bracelet.

  • Condition: Very good overall condition, with light hairline scratches on the bracelet and peeling on the box
  • Case material: Titanium
  • Bracelet material: Titanium
  • Dial color: Blue
Posted at
Dec 13, 2025, 11:10 AM
Active
[WTS] Zenith Defy Skyline 42mm Black for $4500 CONUS

Zenith Defy Skyline 42mm Black for $4500 CONUS

A Zenith Defy Skyline 42mm in black, purchased from Jomashop last year and only worn around 10 times. It includes an International Warranty.

  • Condition: Fair
  • Year of purchase: last year
  • Previous owner's location: Bay Area
  • Warranty: International Warranty
Posted at
Dec 11, 2025, 6:13 PM
Active
[WTS] Zenith Defy Skyline Chronograph - White Dial - Ref. 03.9500.3600/01.I001

Zenith Defy Skyline Chronograph - White Dial - Ref. 03.9500.3600/01.I001

This is a heavy hitter in the integrated sports watch category that offers incredible value compared to its peers, featuring an updated El Primero 3600 high-frequency movement and a stunning white/silver dial with a starry sky pattern.

  • Condition: Excellent
  • Case Size: 42mm diameter
  • Movement: El Primero 3600
  • Chronograph Accuracy: 1/10th of a second
Posted at
Dec 9, 2025, 5:57 PM
Active
[WTS] 2021 Zenith Defy Classic Titanium 95.9000.670/78.R584 - Full Set on Titanium Bracelet

2021 Zenith Defy Classic Titanium 95.9000.670/78.R584 - Full Set on Titanium Bracelet

A 2021 Zenith Defy Classic Titanium watch on a titanium bracelet, available for sale as a full set.

  • Bracelet type: titanium
Posted at
Dec 8, 2025, 3:35 PM
Active
[WTS] Zenith Defy Skeleton - White Ceramic - 2021 Full Set - Mint Condition

Zenith Defy Skeleton - White Ceramic - 2021 Full Set - Mint Condition

This Zenith White Ceramic Defy Classic Skeleton watch features a unique skeleton design and a classic case shape, with a ceramic case that is exceptionally light on the wrist.

  • Condition: Excellent/Mint Condition
  • Size: 41mm diameter
  • Year: 2021
Posted at
Dec 7, 2025, 4:57 PM
Active
[WTS] Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

No watch description provided.

  • Model: Defy Skeleton Chrono
Posted at
Dec 5, 2025, 2:56 PM
Active
[WTS] Zenith Defy Skyline 41mm Blue - The Best Integrated Bracelet Under $10K (Fight Me)

Zenith Defy Skyline 41mm Blue - The Best Integrated Bracelet Under $10K (Fight Me)

Zenith - Defy Skyline · $5,450
The Zenith Defy Skyline 41mm Blue is a high-end watch featuring an El Primero 3620 movement, which runs at 36,000 VpH. It has an integrated bracelet and a unique sub-dial that rotates every 10 seconds.

  • Condition: Mint/Excellent
  • Movement: El Primero 3620
  • Rotation speed: 36,000 VpH (5Hz)
  • Bracelet size: 41mm case with integrated bracelet
Posted at
Dec 1, 2025, 11:48 PM
Active
>>REDUCED FURTHER<< ZENITH DEFY EXTREME DIVER TITANIUM 5 Year WARRANTY

>>REDUCED FURTHER<< ZENITH DEFY EXTREME DIVER TITANIUM 5 Year WARRANTY

A Zenith Defy El Primero Extreme Diver in Titanium with a black dial, ceramic bezel, and orange highlights.

  • Condition: LNIB (Like New In Box)
  • Diameter: 42mm
  • Water Resistance: 600m
  • Movement: in house El Primero movement
Posted at
Apr 7, 2025, 2:45 PM
Active
Zenith Defy Revival Shadow 97.A3642.670/21.M3642

Zenith Defy Revival Shadow 97.A3642.670/21.M3642

The Zenith Defy Revival Shadow is a high-end watch that comes in superb condition, with minimal signs of wear.

  • Condition: superb, almost like-new
  • Case and bracelet condition: like-new
  • Warranty expiration date: March 2030
  • Shipping method: FedEx Priority
Posted at
Apr 5, 2025, 2:18 AM
Active