Zenith El Primero Chronomaster Open Stainless Steel / Black / Rubber

Reference 03.3300.3604/21.C822

About this watch

The Zenith Chronomaster Open is a masterpiece of luxury watchmaking, combining stunning design with exceptional technical prowess. This stainless steel timepiece boasts a 39.50mm case that strikes a perfect balance between robustness and elegance, while the sunburst black dial provides an excellent backdrop for the luminescent stick and dot indexes. The El Primero 3604 movement is a high-frequency automatic chronograph that measures time with incredible precision, featuring a frequency of 36,000 vibrations per hour and a power reserve of 60 hours. With its modified design, open base plate and bridges create a stunning view of the movement, showcasing Zenith's mastery in timekeeping. The Chronomaster Open is not just a timepiece, but a conversation starter, a piece of history, and a testament to the art of Swiss watchmaking.
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Key Features

  • 39.50mm stainless steel case
  • Sunburst black dial with luminescent indexes
  • El Primero 3604 high-frequency automatic chronograph movement
  • Frequency: 36,000 vibrations per hour
  • Power reserve: 60 hours
  • Modified design with open base plate and bridges
  • Sapphire crystal glass
  • Water resistance: 100m

Specifications

Brand
Zenith
Family
El Primero
Model
Chronomaster Open Stainless Steel / Black / Rubber
Reference
03.3300.3604/21.C822
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 39.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
100

Current Listings

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This beautifully crafted Zenith Captain Chronograph features a rose gold and steel combination, excellent finishing throughout, and comes with various accessories.

  • Condition: Excellent
  • Material: Steel and 18K rose gold
  • Case diameter: 40mm
  • Strap material: Alligator leather
Posted at
Nov 30, 2025, 1:59 PM
Active
[WTS] Zenith El Primero Chrono Sport black dial full kit $7099

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This Zenith El Primero Chrono Sport features a black dial, 41mm case size, and the legendary El primero movement with 1/10th second chronograph abilities.

  • Condition: Very slight scratches along bracelet, specifically clasp area; One scratch near micro adjust easily buffed out
  • Msrp: $11,800
  • Water resistance: 10atm
  • Frequency: 36000/5 Hz
Posted at
Nov 26, 2025, 9:33 PM
Active
[WTS] ZENITH El Primero Stratos Chronograph Spindrift Rose Gold

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A rare Zenith El Primero Stratos Spindrift in 18k rose gold with titanium details, made to collaborate with the Spindrift yacht racing team. The watch features a DLC black ultralight titanium bezel, pushers, and crown, along with an 18k rose gold case and gold plated indices.

  • Condition: Very Good
  • Case material: 18k rose gold
  • Band material: Black rubber with Nomex fabric coating
Posted at
Nov 26, 2025, 8:26 PM
Active
[WTS] 2022 Zenith Defy El Primero 21 Blue Skeleton Titanium 95.9002.9004 Full Set

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Zenith - 95.9002.9004 · $7,500
2022 Zenith Defy El Primero 21 Blue Skeleton Titanium, a 1/10th second chronograph with a 44mm titanium case.

  • Condition: has some scratches on bracelet and case
  • Case material: titanium
  • Bracelet condition: some scratches
  • Size: 44mm diameter
Posted at
Nov 26, 2025, 7:48 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

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A Zenith El Primero Chronomaster Open Heart chronograph watch, featuring a 42mm stainless steel case and in-house Caliber Zenith El Primero 4061 movement. The watch is dated October 2014 and has been recently serviced by Zenith.

  • Condition: Mint Condition with light hairline scratches only
  • Case size: 42mm diameter
  • Water resistance: 30m depth rating
Posted at
Mar 31, 2025, 1:26 PM
Active
Zenith El Primero Synopsis Open Heart � BOX & PAPERS � 03.2170.4613/01.M2170

Zenith El Primero Synopsis Open Heart � BOX & PAPERS � 03.2170.4613/01.M2170

A Zenith El Primero Synopsis Open Heart watch with a 40-millimeter case diameter and gold-toned hands, featuring an open heart design and classic modern architecture.

  • Condition: Excellent, little to no visible wear
  • Case Diameter: 40mm
  • Bracelet Length: 16.5 links
  • Bracket Fit: up to 7.25 inches in circumference
Posted at
Mar 27, 2025, 2:21 PM
Active
Zenith Chronomaster - El Primero - Original - Tricolor Dial - Complete

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A Zenith Chronomaster Original with a tricolor dial, featuring an automatic movement and stainless steel case.

  • Condition: Excellent
  • Case size: 38mm diameter
Posted at
Mar 27, 2025, 12:51 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

A Zenith El Primero Chronomaster Open Heart chronograph watch with a 42mm stainless steel case, featuring a Caliber Zenith El Primero 4061 movement and a date of manufacture in October 2014.

  • Condition: Mint Condition
  • Case diameter: 42mm
  • Movement frequency: 36,000 VPH
Posted at
Mar 25, 2025, 12:45 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

This is a Zenith El Primero Chronomaster Open Heart chronograph watch, featuring a 42mm stainless steel case and powered by the Caliber Zenith El Primero 4061 movement.

  • Condition: Mint Condition with light hairline scratches
  • Case diameter: 42mm
  • Movement frequency: 36,000 VPH
  • Power reserve: 50 hour PR
Posted at
Mar 4, 2025, 12:09 PM
Active