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 Revival A3691

Zenith - A3691 · $5,100

This Zenith Defy Revival features a 37mm stainless steel case with a ruby gradient dial and Cal. Elite 670 automatic movement.

Condition: Very good condition, worn
Case size: 37mm diameter
Water resistance: 300m depth rating
Movement type: automatic

Posted at

Apr 19, 2026, 12:12 AM

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Zenith Defy Revival

Zenith - 03.A3648.670/21.M3648 · $5,350

This listing is for a Zenith Defy Revival, a 37mm watch that comes with a full set.

Case size: 37mm
Year of manufacture: 2025

Posted at

Apr 18, 2026, 6:43 PM

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Zenith Defy Skyline Skeleton Black Ceramic

Zenith - Defy Skyline Skeleton · $11,500

This Zenith Defy Skyline Skeleton features a full ceramic construction with 100M WR and an El primero movement beating at 5Hz, along with a skeletonized dial and rotor.

Condition: like new
Water Resistance: 100m
Power Reserve: 55hr
Vibration Per Hour: 36000

Posted at

Apr 17, 2026, 5:51 PM

Active

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Zenith Defy Skyline Ice Blue Japan Exclusive 03.9300.3620/16.I001 - 9.9/10 - $7,800

Zenith - 03.9300.3620/16.I001 · $7,800

This is a stunning Zenith Defy Skyline Ice Blue, Japan-exclusive /16 variant with baguette diamond hour markers and an El Primero Caliber 3620 movement.

Condition: 9.9/10 - essentially new
Case size: 41mm diameter
Water resistance: 100m
Movement frequency: 5Hz / 36,000vph

Posted at

Apr 15, 2026, 1:18 PM

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Zenith Defy Skyline Chronograph Silver - Full Set 2024 - SS Bracelet & Green Strap w/ Deployant - $8,150

Zenith - Defy Skyline Chronograph · $8,150

Bracelet type: stainless steel
Strap color: green

Posted at

Apr 14, 2026, 12:47 PM

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Zenith Defy. Titanium. Skeleton. 🔥

Zenith - Defy Skeleton · $5,250

A Zenith Defy Skeleton watch in titanium, featuring an automatic movement and deployant clasp.

Condition: Very good condition
Material: Titanium
Movement Type: Automatic

Posted at

Apr 13, 2026, 7:39 PM

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Zenith Defy El Primero 21 $5050

Zenith - Defy El Primero 21 · $5,050

A Zenith El Primero 21 is being sold to fund a Credor purchase during the seller's Japan trip.

Condition: Moderate wear, light scratches

Posted at

Apr 13, 2026, 7:32 PM

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(Zenith) (Defy Classic) (alligator strap and bracelet)

Zenith - 95.9000.670/77.R782 · $6,500

This Zenith Defy Classic features a 41mm titanium case, a silver skeleton dial, and a sapphire crystal. The watch comes with an alligator strap and a stainless steel bracelet.

Condition: Good to new
Bracelet: Stainless Steel
Dial: silver skeleton

Posted at

Apr 13, 2026, 6:45 PM

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View listing on r/WatchExchange