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

Reference 49.9000.9004/78.M9000

Zenith Defy El Primero 21 Black Ceramic / Skeleton / Bracelet

About this watch

The Zenith Defy El Primero 21 is a masterclass in design and technology, featuring a unique chronograph that measures time with unparalleled accuracy. Its striking black ceramic case exudes a modern and sporty vibe while remaining elegant enough for formal occasions. The skeleton design allows you to peek into the intricate workings of the watch, making it a conversation starter. At its core is the El Primero 9004 caliber, a self-winding movement capable of measuring time down to 1/100 of a second. With a balance wheel operating at 360,000 beats per hour and cam-actuated chronograph, this watch boasts accuracy and precision. The power reserve indicator adds sophistication to the dial, while the water resistance of 100 meters makes it ready for any adventure. Whether you're dressing up or going casual, this timepiece effortlessly elevates your ensemble. It's a statement piece that combines cutting-edge technology with striking design, perfect for both watch enthusiasts and casual wearers alike.

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Key Features

Zenith El Primero 9004 movement
Black Ceramic case
Chronograph function with power reserve indicator
Water resistance of 100 meters
Sapphire crystal glass
Robust yet comfortable size (44mm diameter, 14.5mm height)
Ceramic bracelet with secure 23mm lug width

Specifications

Brand

Zenith

Family

Defy

Model

Defy El Primero 21 Black Ceramic / Skeleton / Bracelet

Reference

49.9000.9004/78.M9000

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

Zenith - 49.9002.670/01.R792 · $5,200

This Zenith White Ceramic Defy Classic Skeleton watch blends a unique skeleton design with Zenith's classic case shape, featuring a striking white color and a ceramic case that is exceptionally light on the wrist.

Condition: Mint Condition
Case material: Ceramic
Case size: 41mm diameter

Posted at

Nov 28, 2025, 5:19 PM

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