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 Chronograph - Full Set - El Primero 3600 - $9,200

Zenith - 03.9500.3600/01.I001 · $9,200

The Zenith Defy Skyline Chronograph features a silver 'starry sky' dial, a 1/10th-second chronograph with a central chrono hand that makes one full lap every 10 seconds, and a versatile design with a quick-change system for the bracelet and strap.

Condition: Excellent overall Condition
Movement: Zenith El Primero 3600 (5Hz / 36,000 vph) with 1/10th-second chronograph
Case size: 42mm diameter
Bracelets/straps: Steel bracelet and green rubber strap with Zenith quick-change

Posted at

Jan 20, 2026, 7:23 PM

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Zenith Defy Skeleton White Ceramic 49.9002.670/01.R792 Box & Papers

Zenith - 49.9002.670/01.R792 · $6,899

A modern icon that blends cutting-edge design with technical mastery, featuring a 41mm white ceramic case and an openworked dial revealing the Elite 670 automatic movement.

Condition: Great pre-owned condition with light handling marks on the caseback
Case size: 41mm diameter
Movement: Elite 670 automatic

Posted at

Jan 20, 2026, 1:35 PM

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Zenith Defy El Primero 21 Chroma 49.9010.9004/01.R947 limited edition to 200 pieces

Zenith - 49.9010.9004/01.R947 · $10,500

This limited edition Zenith Defy El Primero 21 Chroma is one of only 200 pieces, featuring a complete set and 2022 date.

Condition: Mint condition
Year: 2022

Posted at

Jan 19, 2026, 7:19 PM

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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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