Zenith El Primero Chronomaster Open Stainless Steel / Blue / Boutique Edition

Reference 03.3300.3604/51.M3300

About this watch

The Zenith Chronomaster Open Stainless Steel / Blue / Boutique Edition is a masterpiece that embodies innovation and tradition. Its stunning blue dial with sunburst finish catches the light beautifully, giving it a dynamic look that changes with your movement. The round stainless steel case measures 39.50 mm in diameter, offering a perfect balance of presence without being overly bulky. The open-heart design allows you to peek into the intricate workings of the watch, making it not just a timekeeper, but a conversation starter. With a water resistance of 100 meters, this watch is built to withstand the elements. At its core lies the Zenith caliber El Primero 3604, an automatic chronograph movement that measures time to a precision of 1/10th of a second and features a power reserve of up to 60 hours. The stainless steel case adds durability while enhancing the overall aesthetic, complemented by sapphire crystal glass that ensures scratch-resistance. Wearing the Chronomaster Open is an experience in itself, striking a perfect balance for most wrists with its comfortable fit. Whether dressing up or going casual, this watch complements any outfit due to its versatility and excellent after-sales service offered by Zenith.
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Key Features

  • Automatic chronograph movement (El Primero 3604)
  • Water resistance of 100 meters
  • Stainless steel case with sapphire crystal glass
  • Open-heart design for intricate workings visibility
  • Power reserve of up to 60 hours
  • Frequency of 36,000 vibrations per hour
  • Lubricant-free silicon escapement

Specifications

Brand
Zenith
Family
El Primero
Model
Chronomaster Open Stainless Steel / Blue / Boutique Edition
Reference
03.3300.3604/51.M3300
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 39.5mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph - 40th Anniversary Limited Edition Ref.96.1969.469/77.C683 | Papers & Extra Strap

Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph - 40th Anniversary Limited Edition Ref.96.1969.469/77.C683 | Papers & Extra Strap

The Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph is a limited edition watch that pays tribute to the original A384 case design, now executed in lightweight titanium.

  • Condition: Excellent overall
  • Movement Frequency: 36,000 vph
  • Case Material: Titanium
  • Case Size: 40 mm diameter
Posted at
Oct 19, 2025, 10:01 PM
Active
[WTS] Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph – 40th Anniversary Limited Edition| Ref. 96.1969.469/77.C683 | Papers & Extra Strap

Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph – 40th Anniversary Limited Edition| Ref. 96.1969.469/77.C683 | Papers & Extra Strap

This Zenith El Primero New Vintage 1969 Titanium Skeleton Chronograph is a limited edition model released to celebrate the 40th anniversary of the legendary El Primero. The watch features a partially skeletonized dial, a lightweight titanium case, and a modern take on the original A384 case design.

  • Condition: Excellent overall
  • Year: 2014
  • Case material: Titanium
  • Diameter: 40mm
Posted at
Oct 19, 2025, 8:10 PM
Active
[WTS] Zenith El Primero Limited Edition 1/10 of a Second (Striking Tenth) 03.2041.4052 $7500

Zenith El Primero Limited Edition 1/10 of a Second (Striking Tenth) 03.2041.4052 $7500

Zenith - 03.2041.4052 · $7,500
Limited edition Zenith El Primero watch with a custom Dangerous9 strap and original metal bracelet, comes with full set of boxes and papers.

  • Condition: Excellent, due to being a safe queen
  • Original owner: true
  • Custom strap material: leather (brand: Dangerous9)
  • Bracelet condition: near flawless
Posted at
Oct 19, 2025, 7:43 PM
Active
[WTS] Zenith El Primero Chronomaster Original “1/10” Silver Dial 38mm

Zenith El Primero Chronomaster Original “1/10” Silver Dial 38mm

The Zenith Chronomaster Original is a reborn version of an iconic chronograph, featuring the modern El Primero 3600 movement and a 38mm steel case with exhibition case back.

  • Condition: fantastic condition
  • Case size: 38mm
  • Material: steel
Posted at
Oct 18, 2025, 3:37 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

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
Posted at
Mar 31, 2025, 1:26 PM
Active
Zenith El Primero Synopsis Open Heart � BOX & PAPERS � 03.2170.4613/01.M2170

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
Posted at
Mar 27, 2025, 2:21 PM
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Zenith Chronomaster - El Primero - Original - Tricolor Dial - Complete

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
Posted at
Mar 27, 2025, 12:51 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

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
Posted at
Mar 25, 2025, 12:45 PM
Active
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete

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
Posted at
Mar 4, 2025, 12:09 PM
Active