Zenith Defy Defy El Primero 21 Ultrablue

Reference 97.9001.9004/81.R946

About this watch

The Zenith Defy El Primero 21 Ultrablue is a masterpiece of horology, boasting an exceptional Zenith caliber El Primero 9004 movement with 36,000 vibrations per hour. Its skeleton dial and vibrant blue accents create a dynamic contrast that's both sporty and elegant. With a water resistance of up to 100 meters and sapphire crystal glass, this watch is built for adventure. The titanium case provides durability and a lightweight feel on the wrist, making it perfect for everyday wear. Whether you're at a formal event or out for a casual day, the Ultrablue fits seamlessly into any occasion. Its unique features and striking design make it a standout piece in any collection, celebrating craftsmanship and style. With its impressive movement, bold design, and user-centric features, this watch is more than just a tool for telling time; it's an experience.
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Key Features

  • Zenith caliber El Primero 9004 movement
  • Skeleton dial with vibrant blue accents
  • Titanium case with water resistance up to 100 meters
  • Sapphire crystal glass
  • Chronograph functionality with 50-minute power reserve
  • Lightweight and comfortable design
  • Robust materials and construction

Specifications

Brand
Zenith
Family
Defy
Model
Defy El Primero 21 Ultrablue
Reference
97.9001.9004/81.R946
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph
  • Chronometer, Power Reserve Indicator
Case
44mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] 2023 Zenith Defy Skyline 41mm Stainless Steel White Dial 03.9300.3620 Full Set

2023 Zenith Defy Skyline 41mm Stainless Steel White Dial 03.9300.3620 Full Set

Zenith - 03.9300.3620 · $5,850
This 2023 Zenith Defy Skyline is a stainless steel model featuring a white sunburst pattern dial. It has a 41mm case diameter and includes additional rubber straps and a deployant clasp.

  • Condition: Nice preowned condition with light scratches on the case, bracelet and bezel. Ding in the bottom lug.
  • Case Dimensions: 41mm diameter
  • Bezel: Stainless Steel Octagonal Bezel
  • Band Material: Steel Bracelet with 3 Additional Rubber Straps & Deployant Clasp
Posted at
Jan 27, 2026, 9:14 PM
Active
[WTS] Zenith Defy Skeleton 95.9000.670/78.M9000

Zenith Defy Skeleton 95.9000.670/78.M9000

The Zenith Defy Skeleton features a modern openworked dial, integrated titanium bracelet, and skeletonized movement. It has a 41mm case and weighs well due to the lightweight materials used.

  • Condition: excellent
  • Case size: 41mm
  • Bracelet material: titanium
Posted at
Jan 26, 2026, 10:11 AM
Active
[WTS] Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

A Zenith El Primero Defy Extreme Diver with a unique blue starry sunray pattern dial and a titanium case.

  • Condition: Pre-owned, barely over a year old
  • Case size: 42.5MM diameter
  • Movement: El Primero cal 3620 CS automatic movement
Posted at
Jan 24, 2026, 7:53 PM
Active
[WTS] 2020 Zenith Defy Ceramic Skelton

2020 Zenith Defy Ceramic Skelton

A beautiful Zenith Defy Ceramic Skelton with a warranty card dated 2020, comes as watch and card with travel case.

  • Condition: Mint condition
  • Year: 2020
  • Case material: Ceramic
Posted at
Jan 24, 2026, 12:10 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 featuring a full ceramic construction with a water resistance of 100m. It has an El primero movement beating at 5Hz and a skeletonized dial.

  • Condition: Like new
  • Water Resistance: 100m
  • Movement Type: El primero
  • Frequency: 5Hz
Posted at
Jan 24, 2026, 10:16 AM
Active
[WTS] Zenith Defy Power Reserve black dial  03.0516.685 – Box + Papers

Zenith Defy Power Reserve black dial 03.0516.685 – Box + Papers

Zenith - 03.0516.685 · $3,620
This Zenith Defy Classic Power Reserve features a robust stainless steel case, black dial, and automatic movement, making it a versatile watch that blends everyday wearability with distinctive character.

  • Condition: Attractive condition with very light signs of previous wear
  • Case size: 43mm diameter
  • Movement serviced: Yes, freshly serviced by our watchmaker
  • Accuracy: +1 seconds per day
Posted at
Jan 22, 2026, 6:48 PM
Active
[WTS] Zenith Defy Skeleton Blue 🔥Brand New 2026, $8500+Shipping🔥

Zenith Defy Skeleton Blue 🔥Brand New 2026, $8500+Shipping🔥

This listing is for a brand new Zenith Defy Skeleton Blue. The watch comes with additional details and accessories, as shown in the last picture.

  • Shipping: additional cost
  • Payment methods: wire or credit card (+4.9%)
Posted at
Jan 22, 2026, 7:52 AM
Active
[WTS] Zenith Defy Skyline Chronograph - Full Set - El Primero 3600 - $9,200

Zenith Defy Skyline Chronograph - Full Set - El Primero 3600 - $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
Active