Zenith El Primero El Primero Chronomaster Full Open 42 Stainless Steel / Rose Gold / Strap / Alligator

Reference 51.2081.400/78.C810

Zenith El Primero Chronomaster Full Open 42 Stainless Steel / Rose Gold / Strap / Alligator

About this watch

Immerse yourself in the world of luxury watches with the Zenith El Primero Chronomaster Full Open 42 (model: 51.2081.400/78.C810). This stunning piece combines sophistication with state-of-the-art technology, making it a must-have for any watch enthusiast. The combination of stainless steel and rose gold gives it a luxurious yet sporty appearance. The open dial showcases the intricate workings of the movement, inviting you to appreciate the artistry within. At the heart of this timepiece is the Zenith caliber El Primero 400B movement, boasting a frequency of 36,000 vibrations per hour for an accuracy of 1/10th of a second. This automatic movement offers range of features that make it incredibly functional, including a convenient date display and chronograph function perfect for timing events with precision. The watch is paired with a luxurious alligator leather strap that enhances its elegance while ensuring a comfortable fit on the wrist. With a water resistance of up to 100 meters, you can confidently wear this beauty while swimming or during a rainy day without worrying about water damage. Its impressive 50-hour power reserve allows it to easily keep up with your busy lifestyle.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Zenith caliber El Primero 400B movement
  • 42mm stainless steel and rose gold case
  • Sapphire crystal glass
  • 100m water resistance
  • Chronograph function with precision timing
  • Convenient date display
  • Luxurious alligator leather strap

Specifications

Brand
Zenith
Family
El Primero
Model
El Primero Chronomaster Full Open 42 Stainless Steel / Rose Gold / Strap / Alligator
Reference
51.2081.400/78.C810
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
42mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
100

Current Listings

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

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

Zenith - 03.3100.3600/69.M3100 路 $7,550
Up for sale is a Zenith El Primero Chronomaster Sport in White Dial - 41mm with mechanical functions that work perfectly.

  • Condition: Fantastic condition with no hairlines on clasp, case, and bracelet
  • Case size: 41mm diameter
  • Water resistance: unknown
Posted at
Mar 31, 2026, 8:48 AM
Active
View listing on r/WatchExchange
[WTS] GORGEOUS Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set

GORGEOUS Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set

Zenith - 35.1250.4009 路 $12,750
The Zenith El Primero Flyback Chronomaster in 18K gold is a large and impressive dress watch featuring an intricate guilloche dial.

  • Condition: Mint
  • Diameter: 43mm
  • Case material: 18K solid yellow gold
  • Movement: El Primero automatic chronograph cal 4009
Posted at
Mar 30, 2026, 9:18 PM
Active
View listing on r/WatchExchange
[WTS] Zenith 49.9010.9004/01.R947 Defy El Primero 21 Chroma 馃帹 limited to 200 pieces

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

Zenith - 49.9010.9004/01.R947 路 $50,000
This Zenith Defy El Primero 21 Chroma is a limited edition watch produced in only 200 pieces, featuring a complete set and 2022 date.

  • Condition: Mint condition
Posted at
Mar 30, 2026, 9:07 PM
Active
View listing on r/WatchExchange
[WTS] 1970 Zenith El Primero A385 Chronograph - $7,350

1970 Zenith El Primero A385 Chronograph - $7,350

Zenith - A385 路 $7,350
Up for sale is a magnificent Zenith El Primero A385 from 1969-1970, limited to approximately 2,400 pieces. It is powered by Zenith鈥檚 automatic El Primero movement, Caliber 3019 PHC/400, which is historically significant as the first automatic chronograph movement and the movement used in the Rolex Daytona models until 2000.

  • Condition: Excellent
  • Case diameter: 37mm
  • Case thickness: 9.8mm
  • Lug to lug length: 46.5mm
Posted at
Mar 30, 2026, 9:06 PM
Active
View listing on r/WatchExchange
[WTS] Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

Zenith - 96.2260.4061/21.R575 路 $5,750
This limited edition El Primero Tribute to Rolling Stones is a unique timepiece featuring the iconic Zenith brand.

  • Condition: preowned clean condition with minor hairline scratches
  • Movement type: El Primero
Posted at
Mar 30, 2026, 5:09 PM
Active
View listing on r/WatchExchange
[WTS] Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

Zenith | 96.2260.4061/21.R575 | Rolling Stones Edition El Primero | $5,750

Zenith - 96.2260.4061/21.R575 路 $5,750
Zenith's Rolling Stones Edition El Primero watch features a unique design and is part of the limited edition series.

Posted at
Mar 30, 2026, 5:09 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Chronomaster Triple Calendar Hodinkee Meteorite Limited Edition 1 of 200

Zenith El Primero Chronomaster Triple Calendar Hodinkee Meteorite Limited Edition 1 of 200

Zenith - 03.3401.3610/21.M3200 路 $13,500
This limited edition Zenith El Primero Chronomaster Triple Calendar features meteorite subdials on a sporty reverse-panda setup, produced in collaboration with Hodinkee. The watch is complete with an OEM leather strap and metal bracelet, both unworn, and comes with various accessories such as shipping cardboard, inner/outer box, travel case, warrant/papers, manuals, hangtag, polishing cloth, moonphase adjustment, and a double deployment clasp.

  • Condition: Like new
  • Case diameter: 38mm
  • Thickness: 14mm
  • Water resistance: 50m
Posted at
Mar 30, 2026, 4:14 PM
Active
View listing on r/WatchExchange
[WTS] Ultra Rare Zenith El Primero Tourbillon Chronograph in 18K White Gold - JUST 50 MADE!

Ultra Rare Zenith El Primero Tourbillon Chronograph in 18K White Gold - JUST 50 MADE!

Zenith - 65.1260.4005/21.C505 路 $21,850
The Zenith El Primero Tourbillon Chronograph is a limited edition of just 50 made in full 18 karat white gold. It features an incredible tourbillon and comes with a beautiful collector set, including an appraisal from Zenith.

  • Condition: Really clean condition, minimal wear throughout
  • Case size: 45MM
  • Case material: 18K solid white gold
  • Diameter: 40mm (case diameter)
Posted at
Mar 29, 2026, 9:07 PM
Active
View listing on r/WatchExchange
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith - 03.2040.4061/69.C496 路 $4,950
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
View listing on RolexForums