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.
Buy Now on Jomashop
This is an affiliate link
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] Zenith Defy Classic Aero Chronograph El Primero 46mm - Custom 3D printed Bezels $1,999](https://preview.redd.it/z2zi25lqplif1.png?width=640&crop=smart&auto=webp&s=cb137edd657cc0a1d436d8125bd3a8a81319acb4)
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

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

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

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