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

[WTS] RARE Zenith El Primero Chronograph 18K White Gold Yoshida Edition - JUST 15 MADE - Collector Set!

RARE Zenith El Primero Chronograph 18K White Gold Yoshida Edition - JUST 15 MADE - Collector Set!

A rare Zenith El Primero Chronograph in solid 18K white gold, produced for the Yoshida store in Tokyo and limited to just 15 examples.

  • Condition: Beautiful condition, some minor wear on gold bezel and case sides
  • Case size: 40MM
  • Movement type: Cal 3600 automatic movement
Posted at
Jan 14, 2026, 8:40 PM
Active
[WTS][US] Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm - 03.3120.3600/76.M3100 - Full Set

[US] Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm - 03.3120.3600/76.M3100 - Full Set

This Zenith El Primero Chronomaster Sport features a Meteorite Dial and measures 42mm in diameter.

  • Condition: Fantastic condition, minor hairlines
  • Case size: 42mm
  • Diameter: 42mm
Posted at
Jan 13, 2026, 8:12 AM
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, 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

Zenith Chronomaster - El Primero - Original - Tricolor Dial - Complete

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
Zenith Class Sport El Primero Chronograph Black Dial Hand Wound  02.0500.420

Zenith Class Sport El Primero Chronograph Black Dial Hand Wound 02.0500.420

Zenith - 02.0500.420 · $3,120
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
Posted at
Mar 2, 2025, 5:41 AM
Active
Zenith Grande Class Open El Primero Chrono Power Reserve 03.0520.4021, Black B&P

Zenith Grande Class Open El Primero Chrono Power Reserve 03.0520.4021, Black B&P

Zenith - 03.0520.4021 · $3,595
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
Posted at
Mar 1, 2025, 2:41 AM
Active