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

Reference 51.2081.400/78.C810

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.
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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

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  • Condition: Honest wear consistent with careful ownership
  • Movement: Zenith El Primero automatic movement
  • Case material: Titanium
  • Bezel material: Polished steel
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May 27, 2026, 10:19 AM
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  • Condition: Vintage good condition, lightly worn
  • Case size: ~36mm x 44mm
  • Diameter: 40-45mm diameter
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May 27, 2026, 9:02 AM
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  • Condition: Brand new, never used
  • Material: leather
  • Strap type: deployant clasp
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  • Condition: Excellent condition
  • Case size: 44mm
  • Case material: Titanium
  • Dial condition: Brand new condition
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The Zenith Tipo CP-2 Chronograph is a vintage-style chronograph inspired by military designs, featuring a matte black dial and bold lume markers.

  • Condition: Great condition, showing only light signs of normal wear
  • Case size: 43mm diameter
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  • Power reserve: 50 hour power reserve
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  • Condition: Fantastic condition with few hairlines on clasp, case, and bracelet
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May 21, 2026, 6:24 AM
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  • Condition: preowned clean condition with minor hairline scratches
  • Service History: unknown
  • Shipping: FREE 2 Day Insured FedEx Shipping
  • Returns: NO RETURNS
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  • Condition: Mint
  • Diameter: 42mm
  • Case material: Stainless Steel
  • Bracelet material: Stainless Steel
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May 20, 2026, 8:13 PM
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