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 Classic 95.9000.670/51.M9000

Zenith - 95.9000.670/51.M9000 · $4,999

A modern, lightweight luxury sports watch featuring a striking blue sunray dial and date display.

Case size: 41mm
Bracelet type: integrated
Movement: Elite 670 automatic

Posted at

Apr 1, 2026, 3:43 PM

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Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001 · $9,499

A modern design and precision craftsmanship, powered by the El Primero 3600 automatic chronograph caliber, delivering 1/10th of a second chronograph precision.

Condition: Excellent overall with only light signs of wear
Movement: El Primero 3600 automatic chronograph
Power reserve: 60 hours
Frequency: 36,000 vph (5 Hz)

Posted at

Mar 31, 2026, 4:56 PM

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

Zenith - 49.9010.9004/01.R947 · $50,000

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

Condition: Mint condition

Posted at

Mar 30, 2026, 9:07 PM

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Zenith Defy Skeleton. Titanium.

Zenith - Defy Skeleton · $4,595

A Zenith Defy Skeleton in titanium is being sold with a card included.

Condition: Clean
Material: titanium
Case diameter: 40mm
Country of origin: Switzerland

Posted at

Mar 30, 2026, 6:58 PM

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2022 Zenith Defy Skyline Black Dial 41mm 03.9300.3620/21.I001 - Full Set

Zenith - 03.9300.3620/21.I001 · $5,997

The Zenith Defy Skyline features a sleek black dial and a 41mm angular case with an integrated bracelet. The watch is crafted in stainless steel and offers exceptional depth and contrast.

Condition: excellent preowned, like new condition
Case size: 41mm diameter
Water resistance: 100m depth rating
Movement type: El Primero high-frequency automatic movement

Posted at

Mar 27, 2026, 4:00 PM

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Zenith Defy Skyline. Blue dial. Jan 2026. Full Kit

Zenith - 03.9300.3620/51.I001 · $5,900

This is a preowned Blue Dial Zenith Skyline from Jan 2026 with a January 2026 warranty card.

Condition: Excellent condition and partially stickered
Warranty expiration date: Jan 2028
Dial color: blue
Size: 41mm diameter

Posted at

Mar 27, 2026, 3:30 PM

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Zenith | 03.9300.3620/15.I001 | Defy Skyline Ice Blue | $7,750

Zenith - 03.9300.3620/15.I001 · $7,750

This Zenith Defy Skyline Ice Blue is a high-end watch featuring an ice blue dial and a stainless steel case.

Condition: preowned clean condition with minor hairline scratches throughout
Service history: unknown
Shipping: free 2 day insured fedex
Return policy: no returns, all sales are final

Posted at

Mar 27, 2026, 3:06 PM

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Zenith Defy Classic Carbon Skeleton 10.9000.670/80.R795 | Full Set 2022 | Ultra Light 65g | Titanium Clasp

Zenith - 10.9000.670/80.R795

The listing is for a Zenith Defy Classic Carbon Skeleton from 2022, featuring an ultra-lightweight design of just 65g.

Weight: 65g
Material: Titanium
Year: 2022

Posted at

Mar 27, 2026, 9:57 AM

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Zenith Defy Skyline Chronograph Skeleton | Ref. 03.9500.3600/79.I001 | 2025 | Unworn | Full Set

Zenith - 03.9500.3600/79.I001 · $12,450

The Zenith Defy Skyline Chronograph Skeleton features a stunning blue openworked skeleton dial, powered by the high-frequency El Primero chronograph movement, allowing for true 1/10th of a second chronograph precision.

Condition: Unworn
Case diameter: 42mm
Water resistance depth rating: 100m
Power reserve duration: ~55 hours

Posted at

Mar 27, 2026, 6:50 AM

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