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

Reference 49.9000.9004/78.M9000

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

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

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

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

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

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
Active
[WTS]🔥ZENITH DEFY SKYLINE CERAMIC SKELETON BRAND NEW JAN 2026 COMPLETE GORGEOUS!!!🔥

🔥ZENITH DEFY SKYLINE CERAMIC SKELETON BRAND NEW JAN 2026 COMPLETE GORGEOUS!!!🔥

The Zenith Defy Skyline Skeleton Ceramic features a beautiful blue dial, 41MM ceramic case, and is a complete set.

  • Condition: Brand New
  • Material: Ceramic
  • Case size: 41mm diameter
Posted at
Jan 15, 2026, 2:34 AM
Active
[WTS]🔥ZENITH DEFY SKYLINE BRAND NEW 2025 COMPLETE BLUE DIAL 41MM $5999+SHIP🔥

🔥ZENITH DEFY SKYLINE BRAND NEW 2025 COMPLETE BLUE DIAL 41MM $5999+SHIP🔥

This is a brand new Zenith Defy Skyline watch with a blue dial and stainless steel case.

  • Condition: Brand New
  • Case Size: 41MM diameter
  • Material: Stainless Steel
  • Dial Color: Blue
Posted at
Jan 15, 2026, 2:22 AM
Active
[WTS] Zenith Defy 21. Chroma. Limited Edition 200. Box, Papers.

Zenith Defy 21. Chroma. Limited Edition 200. Box, Papers.

A limited edition Zenith Defy 21 Chroma, featuring a unique design and limited to 200 pieces.

  • Edition: Limited to 200 pieces
  • Shipping: FedEx with insurance
  • Global Shipping: Yes
Posted at
Jan 13, 2026, 3:34 PM
Active
[WTS] Zenith Defy Skyline Skeleton 41mm 49.9300.3620/78.1001 BOXES/PAPERS!

Zenith Defy Skyline Skeleton 41mm 49.9300.3620/78.1001 BOXES/PAPERS!

This listing is for a Zenith Defy Skyline Skeleton 41mm timepiece that comes with various accessories and is in good working order.

  • Condition: Excellent pre-owned condition with very light cosmetic wear throughout
  • Case diameter: 41mm
  • Movement: Automatic
  • Crystal: Sapphire
Posted at
Jan 13, 2026, 2:15 PM
Active
[WTS] Zenith Defy Classic Automatic Men’s Watch – White Ceramic – Lightly Worn FULL SET

Zenith Defy Classic Automatic Men’s Watch – White Ceramic – Lightly Worn FULL SET

This is a modern, lightweight luxury sports watch with a fully skeletonized dial and Zenith’s in-house Elite movement.

  • Condition: Lightly worn
  • Case diameter: 41mm
  • Movement jewels: 27
  • Power reserve: ~50 hours
Posted at
Jan 11, 2026, 1:16 PM
Active
[WTS] Zenith Defy Skyline Skeleton Black Ceramic

Zenith Defy Skyline Skeleton Black Ceramic

The Zenith Defy Skyline Skeleton is a high-end watch made from full ceramic construction with a skeletonized dial and rotor. It features an El primero movement beating at 5Hz and has a power reserve of 55 hours.

  • Condition: like new
  • Movement: El primero
  • Vibration rate: 36,000 per hour
  • Power reserve: 55 hours
Posted at
Jan 10, 2026, 3:22 PM
Active