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.
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 Zenith Defy El Primero 21 Blue Skeleton Dual Escapement Chronograph 44mm Titanium Complete 2018
The Zenith Defy El-Primero 21 is a Dual Escapement Chronograph Skeletonized watch with a 44mm Titanium Case, dated August 2018. It features the fastest and most precise manufacture chronograph movement in production, operating at a rate of 50Hz.
- Condition: Mint Condition
- Case size: 44mm
- Movement frequency: 50Hz
- Accuracy: 1/100th of a second
![[WTS] Zenith Chronomaster El Primero 38mm 2022 Ref 03.3600.3200 Panda Dial $5,500](https://preview.redd.it/vic9mrqfshwe1.jpg?width=640&crop=smart&auto=webp&s=2be4626ea1d321cead7cd38d9a4b6a2dd572c4cd)
Zenith Chronomaster El Primero 38mm 2022 Ref 03.3600.3200 Panda Dial $5,500
This Zenith Chronomaster El Primero is a versatile watch with a panda dial, serviced in 2023 to remove magnetization and polished to mint condition.
- Condition: Pre-owned in great overall shape, with light scratches on the bracelet.
- Diameter: 38mm
- Year: 2022
- Features: Panda Dial, El Primero Movement
![[WTS] 2020 Zenith Chronomaster El Primero 42mm Tri Color Silver Dial 03.2040.400 Full Set](https://preview.redd.it/7qk9zdbpcgwe1.jpg?width=640&crop=smart&auto=webp&s=1d9f1995863ec1c6cfb8dda05d49df7f0df64545)
2020 Zenith Chronomaster El Primero 42mm Tri Color Silver Dial 03.2040.400 Full Set
2020 Zenith Chronomaster El Primero, a highly iconic chronograph with a silver tri-color dial.
- Condition: Has at least one small mark on AR coating on crystal, scratches on case and bracelet
- Case material: Stainless Steel
- Case dimensions: 42mm diameter
- Bezel: Stainless Steel

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete
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

Zenith El Primero Synopsis Open Heart � BOX & PAPERS � 03.2170.4613/01.M2170
A Zenith El Primero Synopsis Open Heart watch with a 40-millimeter case diameter and gold-toned hands, featuring an open heart design and classic modern architecture.
- Condition: Excellent, little to no visible wear
- Case Diameter: 40mm
- Bracelet Length: 16.5 links
- Bracket Fit: up to 7.25 inches in circumference

Zenith Chronomaster - El Primero - Original - Tricolor Dial - Complete
A Zenith Chronomaster Original with a tricolor dial, featuring an automatic movement and stainless steel case.
- Condition: Excellent
- Case size: 38mm diameter

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete
A Zenith El Primero Chronomaster Open Heart chronograph watch with a 42mm stainless steel case, featuring a Caliber Zenith El Primero 4061 movement and a date of manufacture in October 2014.
- Condition: Mint Condition
- Case diameter: 42mm
- Movement frequency: 36,000 VPH

Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete
This is a Zenith El Primero Chronomaster Open Heart chronograph watch, featuring a 42mm stainless steel case and powered by the Caliber Zenith El Primero 4061 movement.
- Condition: Mint Condition with light hairline scratches
- Case diameter: 42mm
- Movement frequency: 36,000 VPH
- Power reserve: 50 hour PR
Zenith Class Sport El Primero Chronograph Black Dial Hand Wound 02.0500.420
This Zenith Class Sport El Primero Chronograph is a hand-wound mechanical watch with a black dial and stainless steel case.
- Condition: 95%
- Size: 39mm diameter
- Function: Chronograph ; date