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

2020 Zenith Defy El Primero 21 Skeleton Chronograph – Ref. 49.9000.9004/78.R582 – Full Set – Excellent Condition – $7,750 Shipped

Zenith - 49.9000.9004/78.R582 · $7,750

2020 Zenith Defy El Primero 21 Skeleton Chronograph, a high-performance chronograph showcasing Zenith’s innovative 1/100th-of-a-second movement, featuring an openworked dial and lightweight titanium case.

Condition: Excellent
Case Size: 44mm diameter
Case Material: Titanium
Movement Type: Automatic chronograph (El Primero 21, 1/100th second)

Posted at

Feb 12, 2026, 10:02 PM

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

Zenith - 49.9300.3620/78.1001

Size: 41mm

Posted at

Feb 11, 2026, 3:06 PM

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Zenith Defy Skeleton Chrono 03.9500.3600/78.I001

Zenith - 03.9500.3600/78.I001

a Zenith Defy Skeleton Chrono is being listed for sale

Model: Defy Skeleton Chrono

Posted at

Feb 9, 2026, 3:03 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 a full ceramic construction, skeletonized dial, and El primero movement. It has a 100M water resistance and a power reserve of 55 hours.

Condition: like new
Case Material: Black Ceramic
Water Resistance: 100M
Movement Frequency: 5Hz (36,000 vibration per hour)

Posted at

Feb 8, 2026, 3:34 PM

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Zenith Defy El Primero Extreme Diver - LOOK AT THIS AND TRY NOT TO SMILE - Full Set Ref 95.9601.3620/51.I301

Zenith - 95.9601.3620/51.I301 · $7,895

A modern iteration of the Zenith El Primero Defy diver, featuring a titanium case and an iconic movement.

Condition: Mint, with light wear on the case
Case Size: 42.5mm diameter
Dial Pattern: blue starry sunray pattern with bright orange accents
Movement Type: automatic cal 3620 CS

Posted at

Feb 7, 2026, 3:36 PM

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🔥2023 ZENITH DEFY 21 ULTRA VIOLET 44MM SKELETON DIAL MINT COMPLETE🔥

Zenith - 97.9001.9004/80.R922 · $9,350

A 2023 ZENITH DEFY 21 ULTRA VIOLET with a 44MM titanium case and skeleton dial.

Condition: MINT!!
Case diameter: 44MM
Material: Titanium
Dial color: Ultra Violet

Posted at

Feb 5, 2026, 9:00 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 · $10,500

This listing is for a Zenith Defy El Primero 21 Chroma limited to 200 pieces, which is a complete set from 2022.

Condition: Mint condition
Year: 2022
Quantity Produced: limited to 200 pieces

Posted at

Feb 5, 2026, 1:22 PM

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2024 Zenith Defy Skyline 41mm - $4999

Zenith - Defy Skyline 41mm · $4,999

The Zenith Defy Skyline is a modern sports-luxury watch featuring the El Primero 3620 automatic movement, a silver sunburst dial with engraved four-point star pattern, and an integrated stainless steel bracelet design.

Condition: Excellent condition
Movement: Zenith El Primero 3620 (36,000 vph)
Case size: 41mm
Dial: Silver sunburst with engraved star pattern and Super-LumiNova indices

Posted at

Feb 4, 2026, 11:30 AM

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Zenith Defy Skyline Skeleton Black Dial 🔥Brand New 2026, $7999 + shipping 🔥

Zenith - Defy Skyline Skeleton · $7,999

The Zenith Defy Skyline Skeleton Black Dial is a brand new timepiece that comes with its original box, warranty card dated 2026, and other accessories.

Condition: Brand New
Year Of Manufacture: 2026

Posted at

Feb 4, 2026, 8:30 AM

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