Zenith Defy Defy El Primero 21 Carl Cox

Reference 10.9001.9004/99.R941

About this watch

The Zenith Defy El Primero 21 Carl Cox is a masterpiece of modern watchmaking, featuring the renowned El Primero 9004 caliber with a cam-actuated chronograph capable of measuring time to 1/100 of a second. This self-winding movement boasts a power reserve for the chronograph of 50 minutes and operates on its own escapement system, with a balance wheel that ticks away at an astounding 360,000 beats per hour. The skeleton design allows you to see the intricate mechanics at work, adding an extra layer of fascination. With its striking design, impressive functionality, and water resistance of up to 100 meters, this watch is perfect for adventurous souls who want to own a piece of horological history.

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Key Features

Carbon case with sapphire glass
El Primero 9004 caliber with chronograph function
Sapphire crystal with anti-reflective coating
Water resistance up to 100 meters
44mm diameter and 23mm lug width

Specifications

Brand

Zenith

Family

Defy

Model

Defy El Primero 21 Carl Cox

Reference

10.9001.9004/99.R941

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 Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton Black Ceramic · $11,500

The Zenith Defy Skyline Skeleton is a full ceramic watch with a skeletonized dial and rotor, featuring an El primero movement beating at 5Hz.

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

Posted at

Apr 25, 2026, 10:19 AM

Active

View listing on r/WatchExchange

2020 Zenith Defy Classic Skeleton Titanium 95.9000.670/78.M9000 41mm Full Set - $6,495

Zenith - 95.9000.670/78.M9000 · $6,495

This Zenith Defy Classic Skeleton Titanium is a 2020 model featuring a skeleton design and titanium case.

Condition: Excellent condition with minimal signs of wear
Case material: Titanium
Case size: 41mm diameter
Year: 2020

Posted at

Apr 25, 2026, 9:42 AM

Active

View listing on r/WatchExchange

Zenith Defy. Skeleton. Titanium. Box, Papers..

Zenith - Defy Skeleton · $5,495

The seller is listing a Zenith Defy Skeleton, which features a titanium case and comes with its original box and papers. The watch appears to be well-maintained and ready for a new owner.

Material: titanium
Box And Papers: true

Posted at

Apr 24, 2026, 5:34 PM

Active

View listing on r/WatchExchange

2020 Zenith Defy Classic Skeleton Titanium 95.9000.670/78.M9000 41mm Full Set - $6,495

Zenith - 95.9000.670/78.M9000 · $6,495

Up for sale is a Zenith Defy Classic Skeleton Titanium, a 2020 model with a 41mm case.

Condition: Excellent condition with minimal signs of wear
Case material: titanium
Case size: 41mm

Posted at

Apr 22, 2026, 10:11 AM

Active

View listing on r/WatchExchange

(Zenith) (Defy Classic Titanium) (5700 OBO With Bracelet and Alligator Strap)

Zenith - 95.9000.670/77.R782 · $5,700

This Zenith Defy Classic Titanium is a 41mm watch with a silver skeleton dial, housed in a titanium case with a stainless steel bracelet and an alligator strap.

Condition: Good to new
Bracelet material: Stainless Steel
Case material: Titanium
Dial color: silver skeleton

Posted at

Apr 21, 2026, 7:21 PM

Active

View listing on r/WatchExchange

Zenith Defy Skeleton. Titanium. Clean. Lightweight..

Zenith - Defy Skeleton · $5,250

A lightweight Zenith Defy Skeleton in titanium, featuring a skeleton design.

Condition: Clean, Lightweight
Material: Titanium
Shipping: Fedex with insurance worldwide

Posted at

Apr 21, 2026, 7:13 PM

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View listing on r/WatchExchange

Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $8,050

Zenith - 03.9500.3600/01.I001 · $8,050

This is a Zenith Defy Skyline Chrono Silver with an El Primero movement, featuring a silver 'Starry Sky' dial and integrated stainless steel bracelet.

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

Posted at

Apr 21, 2026, 3:45 PM

Active

View listing on r/WatchExchange