Zenith El Primero El Primero Chronomaster Open Stainless Steel / Black / Alligator
Reference 03.2040.4061/21.C496
About this watch
The Zenith El Primero Chronomaster Open is a masterpiece of luxury watchmaking, embodying the perfect blend of heritage and innovation. Its stunning stainless steel case radiates durability while maintaining a sleek aesthetic, adorned with a sunburst finish that reflects light in captivating ways. The black dial features stick and dot indexes, providing a classic yet contemporary look, while the chronograph sub-dials are elegantly arranged for easy readability. The watch's unique 'open' design showcases exceptional craftsmanship, allowing you to glimpse the intricate inner workings of the timepiece. At its core lies the Zenith caliber El Primero 4061, a marvel of engineering with 282 components, including a silicon escape wheel and lever, operating at an astonishing frequency of 36,000 vibrations per hour. This precision powerhouse can measure time to the tenth of a second, making it one of the most accurate chronographs on the market. The watch's comfort is matched only by its style, featuring a high-quality alligator leather strap that feels luxurious against the skin and strikes a great balance between boldness and manageability.
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Key Features
- Zenith caliber El Primero 4061 movement
- 42mm stainless steel case with sunburst finish
- Black dial with stick and dot indexes
- Water resistance of 100 meters
- Sapphire crystal for scratch-free protection
- High-quality alligator leather strap
- Adjustable strap for a snug fit
Specifications
- Brand
- Zenith
- Family
- El Primero
- Model
- El Primero Chronomaster Open Stainless Steel / Black / Alligator
- Reference
- 03.2040.4061/21.C496
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph, Column wheel
- Case
- Stainless Steel 42mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 100
Current Listings
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Zenith Defy Classic Aero Chronograph El Primero 46mm - Custom 3D printed Bezels $1,999
A Zenith Defy Classic Aero Chronograph featuring the El Primero 4000 SC movement in a 46mm case. The watch has an aftermarket strap/buckle and multiple custom 3D-printed bezels.
- Condition: - Keeps excellent time, strong amplitude (~300). - Crystal, dial, and hands are in excellent shape. - Case sides and lugs show visible scratches (see video/photos)
- Case Size: 46mm
- Movement: Zenith Calibre El Primero 4000 SC
- Case Condition: visible scratches on sides and lugs

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete
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

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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

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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

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

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
Zenith Class Sport El Primero Chronograph Black Dial Hand Wound 02.0500.420
This Zenith Class Sport El Primero Chronograph is a hand-wound mechanical watch with a black dial and stainless steel case.
- Condition: 95%
- Size: 39mm diameter
- Function: Chronograph ; date

Zenith Grande Class Open El Primero Chrono Power Reserve 03.0520.4021, Black B&P
This Zenith Grande Class Open El Primero Chronograph features an in-house movement, chronograph function, power reserve indicator, and is water resistant to 50m.
- Condition: Good condition, some wear on the strap and a small blemish on the sapphire crystal
- Movement: Automatic, in-house Zenith 4021H
- Base movement: Zenith El Primero 400
- Alternations per hour: 36,000

ZENITH CHRONOMASTER SPORT El PRIMERO YOSHIDA GREEN DIAL LIMITED EDITION 2024
The Zenith Chronomaster Sport Yoshida 'Hulk Edition' features a stainless steel case with a green ceramic bezel and dial, powered by the El Primero Caliber 3600.
- Condition: Mint, Unpolished Condition
- Limited edition: 1 of 244 pieces
- Case material: stainless steel
- Bracelet material: stainless steel