Zenith Defy Defy El Primero 21 Full Carbon / Skeleton / Rubber

Reference 10.9000.9004/96.R921

About this watch

The Zenith Defy El Primero 21 is a stunning fusion of art and engineering, boasting a full carbon body that's not only futuristic but also incredibly lightweight. The skeleton design reveals the intricate inner workings of the watch, making it a feast for the eyes. At its heart lies the El Primero Caliber 9004, a self-winding movement that's a marvel of precision engineering. With a cam-actuated chronograph capable of measuring time down to 1/100 of a second and a water resistance rating of 100 meters, this watch is perfect for those who lead an active lifestyle. The lightweight carbon material makes it feel smaller on the wrist, while the rubber strap adds another layer of comfort. It's a statement piece that's not just about telling time but embracing a lifestyle that celebrates craftsmanship and innovation.
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Key Features

  • Full Carbon Case
  • Skeleton Design with El Primero Caliber 9004 Movement
  • Chronograph Function with 1/100 Second Accuracy
  • Water Resistance up to 100 Meters
  • Lightweight Carbon Material for Enhanced Comfort
  • Rubber Strap for Added Durability

Specifications

Brand
Zenith
Family
Defy
Model
Defy El Primero 21 Full Carbon / Skeleton / Rubber
Reference
10.9000.9004/96.R921
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph
  • Chronometer, Power Reserve Indicator
Case
Carbon 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