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

Reference 10.9000.9004/96.R921

Zenith Defy El Primero 21 Full Carbon / Skeleton / Rubber

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.

Buy Now on Jomashop

This is an affiliate link

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

Zenith Defy Skyline Blue 41mm

Zenith - Defy Skyline · $5,900

This Zenith Defy Skyline blue dial watch is a great piece for any collection, powered by the legendary El Primero movement and featuring a 60-hour power reserve. It's mechanically flawless but shows some minor scratches on the case.

Condition: Pre-owned with signs of wear
Movement: El Primero
Power reserve: 60 hours

Posted at

Feb 1, 2026, 8:16 PM

Active

View listing on r/WatchExchange

Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001

Posted at

Feb 1, 2026, 6:42 PM

Active

View listing on r/WatchExchange

Zenith Defy Skyline Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton · $11,999

The Zenith Defy Skyline Skeleton in Black Ceramic is a high-end watch featuring a full ceramic construction, El primero movement, and skeletonized dial with a 10-second subdial.

Condition: Like new
Water Resistance: 100m
Movement Frequency: 5Hz (36,000 vibration per hour)
Power Reserve: 55 hours

Posted at

Feb 1, 2026, 10:43 AM

Active

View listing on r/WatchExchange

2024 Zenith Defy Skyline 41mm

Zenith - Defy Skyline 41mm · $6,200

A modern high-beat Zenith Defy Skyline featuring the El Primero 3620 automatic movement with a 1/10th-of-a-second indicator, available as a full set including original box and papers.

Condition: Pre-owned, excellent condition
Movement Frequency: 36,000 vph
Case Size: 41mm diameter

Posted at

Jan 30, 2026, 1:54 PM

Active

View listing on r/WatchExchange

2024 Zenith Defy Extreme Diver 42.5mm Titanium Black Dial 95.9600.3620 Full Set

Zenith - 95.9600.3620/21.1300 · $7,400

2024 Zenith Defy Extreme Diver, a high-end mechanical watch designed for diving enthusiasts, featuring a titanium case and rotating dive bezel.

Condition: Excellent preowned condition with few signs of wear on the case and bracelet
Case material: Titanium
Case dimensions: 42.5mm diameter
Bezel material: Titanium & Ceramic Octagonal Rotating Dive Bezel

Posted at

Jan 29, 2026, 8:09 PM

Active

View listing on r/WatchExchange

Zenith Defy Skeleton White Ceramic Box & Papers

Zenith - 49.9002.670/01.R792 · $6,899

The Zenith Defy Classic Skeleton in white ceramic features a skeletonized dial revealing the Elite 670 automatic movement, housed in a 41mm case made of lightweight and scratch-resistant white ceramic.

Condition: Great pre-owned condition
Case size: 41mm
Movement: Elite 670 automatic

Posted at

Jan 29, 2026, 12:53 PM

Active

View listing on r/WatchExchange

Zenith Defy Skyline Chronograph "Starry Sky" - Full Set 2024 - $8,150

Zenith - 03.9500.3600/01.I001 · $8,150

The Zenith Defy Skyline Chronograph 'Starry Sky' features an El Primero 3600 movement with a 1/10th-second chronograph hand and a 60-hour power reserve. The watch has a 42mm stainless steel case, silver/white dial, and integrated stainless steel bracelet.

Condition: Excellent
Movement: El Primero 3600 automatic chronograph
Frequency: 5Hz (36,000 vph)
Power reserve: 60 hours

Posted at

Jan 28, 2026, 9:30 PM

Active

View listing on r/WatchExchange

2023 Zenith Defy Skyline 41mm Stainless Steel White Dial 03.9300.3620 Full Set

Zenith - 03.9300.3620 · $5,850

This 2023 Zenith Defy Skyline is a stainless steel model featuring a white sunburst pattern dial. It has a 41mm case diameter and includes additional rubber straps and a deployant clasp.

Condition: Nice preowned condition with light scratches on the case, bracelet and bezel. Ding in the bottom lug.
Case Dimensions: 41mm diameter
Bezel: Stainless Steel Octagonal Bezel
Band Material: Steel Bracelet with 3 Additional Rubber Straps & Deployant Clasp

Posted at

Jan 27, 2026, 9:14 PM

Active

View listing on r/WatchExchange

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

Zenith - 95.9600.3620/01.I300 · $7,650

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

View listing on RolexForums