Zenith El Primero El Primero Chronomaster Power Reserve Blue

Reference 03.2085.4021/51.C700

About this watch

The Zenith El Primero Chronomaster Power Reserve Blue is a masterpiece of watchmaking, blending tradition with modernity to create a timepiece that is both stunning and precise. Its robust stainless steel case measures 42mm in diameter, sitting comfortably on the wrist while its polished finish reflects light beautifully. The blue dial features a sunburst effect, adding a dynamic quality that changes hues as light hits it from different angles. The stick and dot indexes are minimalist yet classic, ensuring readability is never compromised. At the heart of this watch is the Zenith caliber El Primero 4021, a marvel of engineering consisting of 248 components that work in harmony. With an impressive power reserve of 50 hours, this automatic movement ensures you'll never miss a moment. The column wheel chronograph offers precision timing that is simply unmatched, while its silicon escape-wheel and lever enhance durability and reduce friction. This watch is built to withstand the elements, with a water resistance of up to 100 meters. Whether you're a seasoned collector or a newcomer to luxury timepieces, this watch deserves a place in your collection.
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Key Features

  • 42mm stainless steel case
  • Blue sunburst dial with stick and dot indexes
  • Zenith caliber El Primero 4021 automatic movement
  • 50-hour power reserve
  • Column wheel chronograph with silicon escape-wheel and lever
  • 100m water resistance
  • High-quality leather strap or stainless steel bracelet option

Specifications

Brand
Zenith
Family
El Primero
Model
El Primero Chronomaster Power Reserve Blue
Reference
03.2085.4021/51.C700
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
  • Power Reserve Indicator
Case
Stainless Steel 42mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
100

Current Listings

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  • Condition: Excellent
  • Material: Steel and 18K rose gold
  • Case diameter: 40mm
  • Strap material: Alligator leather
Posted at
Nov 30, 2025, 1:59 PM
Active
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  • 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
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  • 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
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  • Condition: has some scratches on bracelet and case
  • Case material: titanium
  • Bracelet condition: some scratches
  • Size: 44mm diameter
Posted at
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Active
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  • 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
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  • 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
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  • Condition: Excellent
  • Case size: 38mm diameter
Posted at
Mar 27, 2025, 12:51 PM
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Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

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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
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  • 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