Zenith El Primero El Primero Chronomaster 42 Stainless Steel / Blue / Alligator

Reference 03.2040.400/53.C700

About this watch

The Zenith El Primero Chronomaster 42 is a masterpiece of luxury watchmaking, blending precision, style, and history in perfect harmony. Its stunning blue sunburst dial shifts with the light, creating a dynamic look that's hard to ignore. The stick and dot indexes are applied with precision, offering a clean look while ensuring readability. At its heart lies the Zenith caliber El Primero 400B, an automatic movement known for its high frequency of 36,000 vibrations per hour, allowing for exceptional accuracy. With a power reserve of approximately 50 hours, this watch is perfect for everyday wear. The luxurious alligator leather strap adds a touch of elegance to the overall design, while the stainless steel case provides durability and a polished look that catches the eye.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Zenith caliber El Primero 400B automatic movement
  • 42mm diameter stainless steel case
  • 100m water resistance
  • 50hr power reserve
  • Luxurious alligator leather strap
  • Blue sunburst dial with stick and dot indexes
  • High frequency of 36,000 vibrations per hour

Specifications

Brand
Zenith
Family
El Primero
Model
El Primero Chronomaster 42 Stainless Steel / Blue / Alligator
Reference
03.2040.400/53.C700
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
Stainless Steel 42mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Zenith El Primero “Open Heart” - Increadible Value

Zenith El Primero “Open Heart” - Increadible Value

Zenith - 03.0520.4021 · $2,950
This is a Zenith El Primero “Open Heart” with a rare white dial variant, featuring the iconic high-beat chronograph movement and an open-heart design.

  • Condition: Very Good
  • Case Size: ~42mm diameter
  • Movement Frequency: 36,000 vph (high-beat)
  • Crystal Type: Sapphire crystal
Posted at
Mar 18, 2026, 1:50 PM
Active
[WTS] Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary 96 1969 469/ 77 C683 ♦️Lightly Used 2014♦️

Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary 96 1969 469/ 77 C683 ♦️Lightly Used 2014♦️

The seller is listing a Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary watch, which was produced in Q3 2014. This limited edition model comes with a full set of box and papers.

  • Condition: Lightly Used
  • Year Of Manufacture: 1969
  • Limited Edition: True (40th Anniversary)
  • Box And Papers: Yes (full set)
Posted at
Mar 18, 2026, 5:56 AM
Active
[WTS] Zenith El Primero ref. 01.0200.415 Big Blue circa 1973

Zenith El Primero ref. 01.0200.415 Big Blue circa 1973

Zenith - 01.0200.415 · $5,450
The Zenith El Primero is a legendary high-frequency automatic chronograph movement first introduced in 1969, beating at 5 Hz and measuring elapsed time with precision. It features an oversized TV-shaped case with a vibrant brushed yachting metallic blue dial, often referred to as the 'Big Blue'. This watch has a unique 1970s aesthetic and is highly sought after by collectors.

  • Condition: Excellent shape for its age, light signs of polish, private service in 2026
  • Case size: 42mm
  • Lug to lug length: 44h
  • Thickness: 14.3 cc
Posted at
Mar 17, 2026, 4:53 PM
Active
[WTS] Zenith El Primero Port Royal V

Zenith El Primero Port Royal V

Zenith - 01/02.0450.400 · $2,650
The Zenith Port Royal V El Primero features symmetry, clarity, and attention to detail throughout its design, making it a visually stunning watch.

  • Condition: Excellent cosmetically
  • Case diameter: 40mm
  • Lug width: 20mm
  • Lug to lug: 47mm
Posted at
Mar 17, 2026, 11:43 AM
Active
[WTS] Zenith 1969/1970 El Primero A385

Zenith 1969/1970 El Primero A385

Zenith - A385 · $7,500
Up for sale is a magnificent El Primero A385 from 1969-1970, limited to approximately 2,400 pieces. It is powered by Zenith’s automatic El Primero movement, Caliber 3019 PHC/400.

  • Condition: Excellent
  • Movement: El Primero Caliber 3019PHC
  • Power reserve: 50 hours
  • Case diameter: 37mm
Posted at
Mar 16, 2026, 5:11 PM
Active
[WTS] BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!

BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!

Zenith - 35.1250.4009 · $12,950
The Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set is a dress watch with an incredible dial and one of the most mesmerizing dials. It features a clean, classic look with a Swiss army knife of functions and has a 43MM 18K solid yellow gold case.

  • Condition: Mint
  • Case diameter: 43mm
  • Material: 18K solid yellow gold
  • Movement type: El Primero automatic chronograph cal 4009
Posted at
Mar 15, 2026, 9:45 PM
Active
[WTS] 2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL SET

2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL SET

A modern iteration of the classic Defy diver, featuring a titanium case and a stunning blue starry sunray dial.

  • Condition: Mint, with light wear
  • Case size: 42.5mm diameter
  • Movement: El Primero cal 3620 CS
  • Depth rating: 30m water resistance
Posted at
Mar 15, 2026, 9:40 PM
Active
[WTS] Zenith vintage El Primero A384  Tropical Dial

Zenith vintage El Primero A384 Tropical Dial

Zenith - A384 · $10,850
A Zenith El Primero A384 chronograph from the early generation, featuring a classic panda dial and tonneau case.

  • Year: 1971
  • Bracelet type: Gay Frères ladder bracelet
Posted at
Mar 12, 2026, 5:24 PM
Active
[WTS] Zenith El Primero “Open Heart” - Need I say more?

Zenith El Primero “Open Heart” - Need I say more?

Zenith - 03.0520.4021 · $2,950
This Zenith El Primero 'Open Heart' features a rare white dial variant and pairs the iconic high-beat chronograph movement with an open-heart design.

  • Condition: Very Good
  • Case diameter: ~42 mm
  • Movement frequency: 36,000 vph
  • Crystal type: Sapphire
Posted at
Mar 11, 2026, 1:54 PM
Active