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

Reference 49.9000.9004/78.R582

About this watch

The Zenith Defy El Primero 21 Black Ceramic / Skeleton / Alligator is a stunning timepiece that showcases exceptional craftsmanship and innovative technology. Its skeleton design allows you to see the intricate workings of the movement, making it a fantastic conversation starter. The black ceramic case adds a modern touch, while the open-back design gives a sneak peek at the beautifully crafted movement. With its dual escapement system, this watch maintains a high level of accuracy, ensuring consistent performance whether using the chronograph or just checking the time. The watch comes with a power reserve indicator for the chronograph and an alligator leather strap that adds a touch of elegance. Whether you’re dressing up for a formal occasion or going casual, this strap has you covered. With its striking contrast between the skeleton design and bold black ceramic case, this watch is easy to read in any lighting condition. At 44 mm in diameter and 14.5 mm in height, the Defy El Primero 21 has a substantial presence on the wrist, but it’s surprisingly comfortable to wear thanks to its ergonomic design.

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Key Features

Zenith Caliber El Primero 9004 Movement
Dual Escapement System for Precise Timing
Skeleton Design with Black Ceramic Case
Chronometer Certified for Accuracy
Power Reserve Indicator for Chronograph
Alligator Leather Strap with Adjustable Lug Width

Specifications

Brand

Zenith

Family

Defy

Model

Defy El Primero 21 Black Ceramic / Skeleton / Alligator

Reference

49.9000.9004/78.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 Classic 95.9000.670/78.M9000 Skeleton Automatic Titanium Bracelet 41mm Full Set

Zenith - 95.9000.670/78.M9000 · $5,975

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

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Zenith Defy Skyline 42mm Black for $4500 CONUS

Zenith - Defy Skyline 42mm · $4,500

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

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

Zenith - 03.9500.3600/01.I001 · $7,950

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

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

Zenith - 95.9000.670/78.R584

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

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

Zenith - 49.9002.670/01.R792 · $4,950

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

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Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001

No watch description provided.

Model: Defy Skeleton Chrono

Posted at

Dec 5, 2025, 2:56 PM

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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

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