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.
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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][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

Up for sale is a Zenith El Primero Chronomaster Sport - Meteorite Dial - 42mm Watch functions perfectly mechanically, without issue.

  • Condition: Fantastic condition with minor hairlines
  • Water Resistance: 30m
  • Case Size: 42mm diameter
  • Band Material: bracelet
Posted at
Jan 27, 2026, 8:00 AM
Active
[WTS] Brand New Zenith Chronomaster Original Reverse Panda El Primero Chronograph | 03.3200.3600/21.C903 | Full Zenith warranty | Price reduced

Brand New Zenith Chronomaster Original Reverse Panda El Primero Chronograph | 03.3200.3600/21.C903 | Full Zenith warranty | Price reduced

A brand new Zenith Chronomaster Original Reverse Panda El Primero chronograph, discontinued by the manufacturer, still in its protective stickers and under full warranty.

  • Condition: Brand new, never used
  • Warranty: 2-year warranty from Zenith
  • Strap: Original leather strap with deployant clasp
Posted at
Jan 25, 2026, 4:06 PM
Active
[WTS] Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

Zenith El Primero Defy Extreme Diver AKA PURE WRIST JOY Ref 95.9601.3620/51.I301 FULL SET

A Zenith El Primero Defy Extreme Diver with a unique blue starry sunray pattern dial and a titanium case.

  • Condition: Pre-owned, barely over a year old
  • Case size: 42.5MM diameter
  • Movement: El Primero cal 3620 CS automatic movement
Posted at
Jan 24, 2026, 7:53 PM
Active
[WTS] Zenith El Primero Chronomaster Revival Panda 03.A384.400/21.C815

Zenith El Primero Chronomaster Revival Panda 03.A384.400/21.C815

This is a 37mm Chronomaster Revival Panda, a limited edition model from Zenith's El Primero series, featuring a classic panda dial.

  • Condition: preowned clean condition with hairline scratches throughout
  • Crystal condition: may contain marks under strong magnification
  • Strap condition: worn
  • Case size: 37mm
Posted at
Jan 23, 2026, 6:51 AM
Active
[WTS] Zenith Defy Skyline Chronograph - Full Set - El Primero 3600 - $9,200

Zenith Defy Skyline Chronograph - Full Set - El Primero 3600 - $9,200

The Zenith Defy Skyline Chronograph features a silver 'starry sky' dial, a 1/10th-second chronograph with a central chrono hand that makes one full lap every 10 seconds, and a versatile design with a quick-change system for the bracelet and strap.

  • Condition: Excellent overall Condition
  • Movement: Zenith El Primero 3600 (5Hz / 36,000 vph) with 1/10th-second chronograph
  • Case size: 42mm diameter
  • Bracelets/straps: Steel bracelet and green rubber strap with Zenith quick-change
Posted at
Jan 20, 2026, 7:23 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

A Zenith El Primero Chronomaster Sport watch featuring a meteorite dial, in 42mm size.

  • Condition: Fantastic with minor hairlines
  • Case size: 42mm
Posted at
Jan 20, 2026, 7:08 AM
Active
[WTS] Zenith 03.2522.400/69.R576 El Primero Chronomaster 45mm

Zenith 03.2522.400/69.R576 El Primero Chronomaster 45mm

This 45mm Chronomaster El Primero is a preowned Zenith watch in good condition.

  • Condition: preowned clean condition with minor hairline scratches throughout
  • Length: 45mm diameter
  • Case material: unknown (not specified)
  • Depth rating: unknown (not specified)
Posted at
Jan 19, 2026, 11:50 PM
Active
[WTS] Zenith Defy El Primero 21 Chroma 49.9010.9004/01.R947 limited edition to 200 pieces

Zenith Defy El Primero 21 Chroma 49.9010.9004/01.R947 limited edition to 200 pieces

This limited edition Zenith Defy El Primero 21 Chroma is one of only 200 pieces, featuring a complete set and 2022 date.

  • Condition: Mint condition
  • Year: 2022
Posted at
Jan 19, 2026, 7:19 PM
Active
[WTS] Zenith El Primero Captain (03.2110.400) - B/P

Zenith El Primero Captain (03.2110.400) - B/P

Zenith - 03.2110.400 · $3,250
A Zenith El Primero Captain with a 42mm diameter case and El Primero 400B movement, featuring a quickset date function.

  • Movement: El Primero 400B
  • Case diameter: 42mm
  • Crystal: Sapphire
Posted at
Jan 17, 2026, 11:13 PM
Active