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

2022 Zenith Defy Black Ceramic Skeleton 2022 with Box and Papers 49.9000.670

Zenith - 49.9000.670 · $6,500

Up for sale is my Zenith Defy Skeleton in Black Ceramic with Box and Papers, dated 2022.

Year: 2022
Warranty Expires: August 2027
Payment Methods: Zelle, Venmo, PayPal F&F, face to face

Posted at

Mar 18, 2026, 11:54 AM

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Zenith Defy 38.2000.463 GMT Automatic Steel&Gold Men's Watch In Original Box $750

Zenith - 38.2000.463 · $750

This Zenith Defy 38 is a men's automatic watch featuring a gold and stainless steel case, leather band, and automatic movement.

Condition: Preowned, with some scratches, tears, wear and marks
Movement: Automatic
Case material: Gold & Stainless Steel
Band type: Zenith Leather with marked buckle band

Posted at

Mar 17, 2026, 4:31 PM

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2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL SET

Zenith - 95.9601.3620/51.I301 · $7,595

A modern iteration of the classic Defy diver, featuring a titanium case and a stunning blue starry sunray dial.

Condition: Mint, with light wear
Case size: 42.5mm diameter
Movement: El Primero cal 3620 CS
Depth rating: 30m water resistance

Posted at

Mar 15, 2026, 9:40 PM

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Zenith Defy Skyline Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton · $11,999

This Zenith Defy Skyline Skeleton features a full ceramic construction, skeletonized dial and star shaped rotor.

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

Posted at

Mar 15, 2026, 5:44 PM

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Zenith Defy 21. Titanium. Full Kit. OEM rubber and Deployant Included.

Zenith - Defy 21 · $5,950

A Zenith Defy 21 in titanium with a full kit, including OEM rubber and deployant clasp.

Material: titanium
Shipping location: NJ USA

Posted at

Mar 14, 2026, 12:34 PM

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Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001

This listing does not contain a description of the watch.

Watch type: Skeleton Chrono

Posted at

Mar 13, 2026, 4:30 PM

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Zenith Defy El Primero 21 Titanium Skeleton Box & Papers

Zenith - 95.9000.9004/78.R582 · $70,000

The Zenith Defy El Primero 21 is a bold, technical watch housed in lightweight brushed titanium with an open-worked skeleton dial exposing the in-house El Primero 9004 movement. It has dual escapements, layered subdials, and red chronograph accents creating depth and mechanical drama. The blue rubber strap keeps it sporty and wearable.

Condition: Great pre-owned condition with light signs of wear
Case material: brushed titanium
Movement type: in-house El Primero 9004 movement
Dial description: open-worked skeleton dial

Posted at

Mar 9, 2026, 9:35 AM

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2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL BOXES & CARD SET

Zenith - 95.9601.3620/51.I301 · $7,649

This is a modern iteration of the classic Zenith El Primero Defy diver, featuring a titanium case with a funky sunray blue dial and an iconic automatic calibre 3620 movement.

Condition: Like new, just over a year old
Case diameter: 42.5mm
Movement: El Primero cal 3620 CS
Rotor description: cool rotor visible through the sapphire case back

Posted at

Mar 8, 2026, 9:30 PM

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Zenith Defy Skyline Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton · $11,999

The Zenith Defy Skyline Skeleton features a skeletonized dial with a 10-second subdial, a skeletonized star-shaped rotor, and an El Primero movement beating at 5Hz. It has a full ceramic construction with 100M water resistance.

Condition: like new
Water Resistance: 100M
Movement Frequency: 5Hz
Power Reserve: 55hr

Posted at

Mar 8, 2026, 11:03 AM

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