Zenith El Primero El Primero Chronomaster Full Open 38 Stainless Steel / Alligator

Reference 03.2153.400/78.C813

Zenith El Primero Chronomaster Full Open 38 Stainless Steel / Alligator

About this watch

The Zenith El Primero Chronomaster Full Open 38 is a masterpiece that combines elegance with cutting-edge technology. Its skeletonized dial reveals the intricate workings of the movement, showcasing the craftsmanship and adding a unique flair. The watch is encased in stainless steel, known for its durability and resistance to tarnishing, with a 42 mm diameter striking a balance between boldness and wearability. The El Primero 400 movement boasts a frequency of 36,000 vibrations per hour (VpH), offering unparalleled accuracy and precision. With a power reserve of 50 hours, the watch is powered by an automatic marvel that adds practicality to its elegance. A luxurious alligator leather strap complements the timepiece, enhancing its elegance and providing comfort throughout the day.
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Key Features

  • Skeletonized dial with 278 movement components
  • Stainless steel case with 42 mm diameter and 12.75 mm height
  • Sapphire glass for scratch resistance
  • 100 meters water resistance for daily wear
  • El Primero 400 automatic movement with 50 hour power reserve
  • Chronograph function for measuring elapsed time
  • Luxurious alligator leather strap for comfort and style

Specifications

Brand
Zenith
Family
El Primero
Model
El Primero Chronomaster Full Open 38 Stainless Steel / Alligator
Reference
03.2153.400/78.C813
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
Stainless Steel 42mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
100

Current Listings

[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♦️

Zenith - 96 1969 469/77 C683 · $6,137
A Zenith El Primero New Vintage 1969 Limited Edition, a special edition marking the 40th anniversary of the Calibre 135. This watch is in lightly used condition and comes with its full set, including box and papers.

  • Condition: Lightly Used
  • Year Of Production: 2014
  • Anniversary Type: 40th Anniversary
  • Limited Edition: true
Posted at
Feb 27, 2026, 9:22 PM
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[WTS] Zenith El Primero Chronomaster Sport - White Dial - 41mm - 03.3100.3600/69.M3100 - Full Set

Zenith El Primero Chronomaster Sport - White Dial - 41mm - 03.3100.3600/69.M3100 - Full Set

Zenith - 03.3100.3600/69.M3100 · $7,550
A Zenith El Primero Chronomaster Sport, a 41mm watch featuring a white dial.

  • Condition: Fantastic with minor hairlines
  • Case Size: 41mm diameter
  • Bracelet Condition: Minor hairlines on clasp
Posted at
Feb 26, 2026, 8:13 AM
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[WTS] Zenith El Primero “Open Heart” — Ref. 03.0520.4021 — White Dial — Full Set / Hard-to-Find

Zenith El Primero “Open Heart” — Ref. 03.0520.4021 — White Dial — Full Set / Hard-to-Find

Zenith - 03.0520.4021 · $3,190
This Zenith El Primero 'Open Heart' features a rare white dial and an iconic high-beat chronograph movement with an open-heart design, allowing you to see the escapement working.

  • Condition: Very Good
  • Diameter: ~42mm
  • Movement Frequency: 36,000 vph
Posted at
Feb 24, 2026, 8:12 PM
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[WTS] Zenith 49.9010.9004/01.R947 El Primero 21 Chrona limited edition

Zenith 49.9010.9004/01.R947 El Primero 21 Chrona limited edition

Zenith - 49.9010.9004/01.R947 · $10,500
This limited edition Zenith Defy El Primero 21 Chroma watch is one of only 200 pieces, dated to 2022.

  • Condition: Mint condition
  • Limited edition: 1 of 200 pieces
Posted at
Feb 23, 2026, 11:52 AM
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[WTS] Neo-Vintage Gem: Zenith El Primero Chronograph - 2025 Serviced w/Extras

Neo-Vintage Gem: Zenith El Primero Chronograph - 2025 Serviced w/Extras

Zenith - 20-0010.420 · $3,350
This Zenith El Primero Chronograph is a high-end timepiece with a rich history, featuring a gold-filled case and a Zenith green ostrich leather strap.

  • Movement: Zenith Cal.420
  • Case diameter: 38mm
  • Lug width: 20mm
Posted at
Feb 23, 2026, 9:00 AM
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[WTS] INSANE Zenith El Primero Flyback in 18K Gold Grand Chronomaster XT Ref 35.1250.4009 COLLECTOR SET!

INSANE Zenith El Primero Flyback in 18K Gold Grand Chronomaster XT Ref 35.1250.4009 COLLECTOR SET!

Zenith - 35.1250.4009 · $14,950
This is a Zenith El Primero Flyback Chronomaster in 18K gold, featuring an off-white dial with guilloche work and a 43mm case.

  • Condition: Mint, with wear on case
  • Case diameter: 43mm
  • Dial color: off-white
  • Movement type: automatic chronograph
Posted at
Feb 22, 2026, 8:36 PM
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[WTS] PRICE DROP! Zenith Defy Extreme Diver El Primero Sunray Blue Dial FULL SET Ref 95.9601.3620/51.I301

PRICE DROP! Zenith Defy Extreme Diver El Primero Sunray Blue Dial FULL SET Ref 95.9601.3620/51.I301

Zenith - 95.9601.3620/51.I301 · $7,649
A modern iteration of the Zenith El Primero diver, reimagined in titanium with a funky design and beautiful blue sunray dial.

  • Condition: like new
  • Case size: 42.5mm
  • Movement: El Primero cal 3620 CS
Posted at
Feb 22, 2026, 2:32 PM
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[WTS] 2020 Zenith Defy El Primero 21 Skeleton Chronograph 49.9000.9004/78.R582 – Full Set – $7,300 Shipped

2020 Zenith Defy El Primero 21 Skeleton Chronograph 49.9000.9004/78.R582 – Full Set – $7,300 Shipped

Zenith - 49.9000.9004/78.R582 · $7,300
A high-performance chronograph showcasing Zenith’s innovative 1/100th-of-a-second movement, housed in a lightweight titanium case.

  • Condition: Excellent
  • Case size: 44mm
  • Case material: Titanium
  • Movement type: Automatic chronograph (El Primero 21, 1/100th second)
Posted at
Feb 21, 2026, 12:07 PM
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[WTS] Titanium Zenith Defy El Primero 21 Skeleton Box & Papers

Titanium Zenith Defy El Primero 21 Skeleton Box & Papers

Zenith - 95.9000.9004/78.R582 · $70,000
The Zenith Defy El Primero 21 Skeleton is housed in lightweight titanium, featuring an open-worked skeleton dial and the in-house El Primero 9004 movement.

  • Condition: Great Pre-Owned condition with light signs of wear
  • Material: lightweight titanium
  • Movement: in-house El Primero 9004
Posted at
Feb 20, 2026, 11:29 AM
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