Zenith Defy Defy El Primero 21 Black Ceramic / Skeleton / Alligator

Reference 24.9000.9004/78.R582

About this watch

The Zenith Defy El Primero 21 Black Ceramic / Skeleton / Alligator is a marvel of modern watchmaking, showcasing Zenith's commitment to pushing the boundaries with its striking black ceramic case and skeleton dial. This timepiece is a statement, a blend of functionality and artistry. The bold design features an alligator leather strap that adds a touch of elegance, while the 44.00 mm diameter and 14.50 mm height make it substantial without being overwhelming. At the core of this masterpiece is the Zenith caliber El Primero 9004 movement, a self-winding marvel capable of measuring time to a precision of 1/100 of a second. The chronograph runs on its own escapement system, with a balance wheel operating at an astounding 360,000 beats per hour. This innovative movement features dual balance springs made from a carbon-matrix carbon nanotube composite, enhancing precision and reliability.

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Key Features

Zenith caliber El Primero 9004 movement
Black ceramic case with skeleton dial
Chronograph function with power reserve indicator
Durable sapphire glass and alligator leather strap
Water resistance up to 100 meters
Certified chronometer for precision and accuracy

Specifications

Brand

Zenith

Family

Defy

Model

Defy El Primero 21 Black Ceramic / Skeleton / Alligator

Reference

24.9000.9004/78.R582

Movement Features

Hours, Minutes, Small Seconds
Chronograph
Chronometer, Power Reserve Indicator

Case

44mm

Dial Color

Skeleton

Crystal

Sapphire

Water Resistance

100

Current Listings

Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001 · $10,499

The Zenith Defy Skyline Skeleton Chronograph represents the pinnacle of modern design and precision craftsmanship, featuring a 42mm stainless steel case, El Primero 3600 automatic chronograph caliber, and 60-hour power reserve.

Condition: Excellent overall with only light signs of wear
Movement: El Primero 3600 automatic chronograph caliber
Power reserve: 60 hours
Frequency: 5 Hz (36,000 vph)

Posted at

Jan 17, 2026, 3:30 PM

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Zenith Defy Skyline Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton · $11,999

The Zenith Defy Skyline Skeleton is a high-end watch featuring full ceramic construction, an El primero movement with 55hr power reserve, and a skeletonized dial.

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

Posted at

Jan 17, 2026, 10:58 AM

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2020 Zenith Defy 21 Ultraviolet 44MM Skeleton Dial Ref 97.9001.9004/80.R922

Zenith - 97.9001.9004/80.R922 · $10,200

The Zenith Defy 21 Ultraviolet features a 44mm sandblasted titanium case, skeleton dial with purple accents, and three chronograph subdials.

Condition: Very good
Case size: 44mm diameter
Water resistance: not specified
Strap material: purple textile

Posted at

Jan 16, 2026, 12:24 PM

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Zenith El Primero Defy Extreme Diver Titanium Ref 95.9601.3620/51.I301 AKA A FULL ON WRIST PARTY!

Zenith - 95.9601.3620/51.I301 · $7,950

This is a Zenith El Primero Defy Extreme Diver Titanium watch with a beautiful blue starry sunray pattern dial and a 42.5MM titanium case.

Condition: Pre-owned, mint condition
Movement: El Primero automatic cal 3620 CS
Case size: 42.5mm diameter
Straps: Original blue rubber strap and oversized cloth dive strap with Zenith buckle

Posted at

Jan 15, 2026, 8:35 PM

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