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

Reference 51.2151.400/78.C810

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

About this watch

The Zenith El Primero Chronomaster Full Open 38 is a masterpiece that combines elegance with exceptional functionality. At its core lies the Zenith caliber El Primero 400, an automatic movement boasting 36,000 vibrations per hour and 278 components. The round case measures 42.00 mm in diameter, protected by sapphire crystal, showcasing intricate details of the skeleton dial. Comfort is key, with an alligator leather strap and lug width of 21.00 mm. With a water resistance rating of 100 meters, this watch can handle everyday wear. Its versatility allows it to seamlessly transition from formal to casual settings, making it a worthy addition to any collection.

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Key Features

Automatic movement
36,000 vibrations per hour
278 components and 31 jewels
Sapphire crystal protection
Water resistance up to 100 meters
Skeleton dial design
Alligator leather strap

Specifications

Brand

Zenith

Family

El Primero

Model

El Primero Chronomaster Full Open 38 Stainless Steel / Rose Gold / Alligator

Reference

51.2151.400/78.C810

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph, Column wheel

Case

42mm

Dial Color

Skeleton

Crystal

Sapphire

Water Resistance

100

Current Listings

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

Zenith - 03.3200.3600/21.C903 · $7,050

This brand new Zenith Chronomaster Original Reverse Panda model has been discontinued by the manufacturer and comes with a full 2-year warranty.

Condition: Brand new, never used
Warranty: 2-year
Shipping method: USPS Registered Mail

Posted at

Feb 20, 2026, 8:04 AM

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Zenith El Primero Chronograph - 2025 Serviced w/Extras

Zenith - 20-0010.420 · $3,350

This is a Zenith El Primero Chronograph, serviced in 2025 and comes with various extras.

Case Diameter: 38mm
Lug Width: 20mm
Lug To Lug: 45mm

Posted at

Feb 17, 2026, 7:30 AM

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Zenith El Primero Chronomaster Sport – 41mm – Black/White Dial – 2023 – $6,200

Zenith - El Primero Chronomaster Sport · $6,200

The Zenith El Primero Chronomaster Sport is a pre-owned watch with a black and white dial, featuring an automatic movement and a chronograph function. It has a stainless steel case with a sapphire crystal and water resistance up to 100m.

Condition: Good to Excellent
Case Size: 41mm diameter
Case Thickness: 13.6mm
Case Material: Stainless Steel (Polished Finish)

Posted at

Feb 16, 2026, 5:27 PM

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Like New Zenith El Primero Chronograph Full Open Skeleton Ref 03.2081.400/78.C813 FULL SET PRICED TO FLY!

Zenith - 03.2081.400/78.C813 · $6,350

This is a fun Zenith El Primero chronograph with a full open skeleton dial, showcasing the incredible movement. It's essentially new, having only been tried on and kept in its original AD set.

Condition: Like New
Case size: 42mm diameter
Movement type: Automatic El Primero cal 400 chronograph movement

Posted at

Feb 15, 2026, 8:28 PM

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GORGEOUS 18K Gold Zenith El Primero Flyback Grande Chronomaster XT Ref 35.1250.4009 COLLECTOR SET!

Zenith - 35.1250.4009 · $15,850

This stunning Zenith El Primero Flyback Grande Chronomaster XT is a beautiful example of watchmaking artistry. Featuring an intricate off-white dial with silver accents and guilloche work, this 18k gold watch exudes luxury and sophistication. With its sleek 43mm case, automatic chronograph movement, and sapphire crystal, this timepiece is sure to turn heads.

Condition: Mint, appears to be lightly worn due to age of the watch and case material
Case size: 43MM diameter
Movement caliber: El Primero automatic chronograph cal 4009
Rotor material: 22K gold

Posted at

Feb 15, 2026, 5:05 PM

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

Zenith - 95.9601.3620/51.I301 · $7,850

A modern iteration of the Zenith Defy El Primero diver, featuring a unique blue starry sunray pattern on its dial. The watch is powered by an iconic automatic cal 3620 CS movement and comes in a 42.5MM titanium case.

Condition: Pre-owned, appears mint
Case Size: 42.5mm diameter
Movement Type: automatic cal 3620 CS

Posted at

Feb 15, 2026, 12:20 PM

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Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

Zenith - 03.2040.4061/69.C496 · $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

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Zenith El Primero Synopsis Open Heart � BOX & PAPERS � 03.2170.4613/01.M2170

Zenith - 03.2170.4613/01.M2170 · $4,000

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

Posted at

Mar 27, 2025, 2:21 PM

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