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

Reference 03.3300.3604/51.M3300

Zenith Chronomaster Open Stainless Steel / Blue / Boutique Edition

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][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 · $7,550
A Zenith El Primero Chronomaster Sport featuring a white dial and 41mm case size is up for sale.

  • Condition: Fantastic condition with few hairlines
  • Case diameter: 41mm
  • Bracelet length: fully linked
Posted at
Apr 30, 2026, 8:10 AM
Active
View listing on r/WatchExchange
[WTS] TOURBILLON FOR THE WIN! Ultra Rare Zenith El Primero Tourbillon Chronograph in 18K White Gold - Collector Set - Just 50 Made!

TOURBILLON FOR THE WIN! Ultra Rare Zenith El Primero Tourbillon Chronograph in 18K White Gold - Collector Set - Just 50 Made!

Zenith - 65.1260.4005/21.C505 · $21,250
The Zenith El Primero is a legendary chronograph with the added feature of a tourbillon, presented in a limited edition of just 50 made. This watch comes in a beautiful collector set including an appraisal from Zenith showing a value of six figures.

  • Condition: really clean condition, including the sapphire crystal
  • Case size: 45mm diameter
  • Material: 18K solid white gold
  • Movement: El Primero automatic chronograph cal 4005
Posted at
Apr 26, 2026, 10:45 PM
Active
View listing on r/WatchExchange
[WTS] Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $7,950

Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $7,950

Zenith - 03.9500.3600/01.I001 · $7,950
This 2024 Zenith Defy Skyline Chronograph features the El Primero 3600 movement, a high-beat automatic chronograph with a 1/10th-second hand. The watch is powered by a column wheel chronograph with vertical clutch and has a 60-hour power reserve.

  • Condition: Excellent
  • Movement: El Primero 3600
  • Frequency: 36,000 vph (5Hz)
  • Power reserve: 60 hours
Posted at
Apr 26, 2026, 4:52 PM
Active
View listing on r/WatchExchange
[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 · $7,525
Up for sale is a Zenith El Primero Chronomaster Sport - White Dial - 41mm - Full Set Watch functions perfectly mechanically, without issue.

  • Condition: Fantastic condition with few hairlines
  • Case Size: 41mm
Posted at
Apr 24, 2026, 8:41 AM
Active
View listing on r/WatchExchange
[WTS] Brand New Zenith Chronomaster Original El Primero Chronograph Reverse Panda | 03.3200.3600/21.C903 | Still under Zenith warranty

Brand New Zenith Chronomaster Original El Primero Chronograph Reverse Panda | 03.3200.3600/21.C903 | Still under Zenith warranty

Zenith - 03.3200.3600/21.C903 · $6,999
This Zenith Chronomaster Original Reverse Panda is a brand new, discontinued model still under warranty and comes on the original leather strap.

  • Condition: Brand new, never used
  • Warranty type: 2-year with optional 3-year extension
  • Strap material: leather
  • Box type: LVMH
Posted at
Apr 22, 2026, 12:01 PM
Active
View listing on r/WatchExchange
[WTS] Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $8,050

Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $8,050

Zenith - 03.9500.3600/01.I001 · $8,050
This is a Zenith Defy Skyline Chrono Silver with an El Primero movement, featuring a silver 'Starry Sky' dial and integrated stainless steel bracelet.

  • Condition: Excellent
  • Movement: El Primero 3600, automatic chronograph
  • Frequency: 36,000 vph (5Hz)
  • Power Reserve: 60 hours
Posted at
Apr 21, 2026, 3:45 PM
Active
View listing on r/WatchExchange
[WTS] Ultra Rare Zenith El Primero Tourbillon Chronograph in 18K White Gold - Collector Set JUST 50 MADE!

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

Zenith - 65.1260.4005/21.C505 · $21,250
The Zenith El Primero Tourbillon Chronograph is a limited edition of just 50 made in full 18 karat white gold, featuring a tourbillon and automatic chronograph cal 4005.

  • Condition: Really clean condition, with minimal wear on the case
  • Movement: El Primero automatic chronograph cal 4005
  • Case Size: 45MM diameter
  • Case Material: 18K solid white gold
Posted at
Apr 19, 2026, 10:25 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Titanium Chronomaster Sport FULL SET Ref 95.3100.3600/39.M3100

Zenith El Primero Titanium Chronomaster Sport FULL SET Ref 95.3100.3600/39.M3100

Zenith - 95.3100.3600/39.M3100 · $8,650
The Zenith El Primero Chronomaster Sport is a titanium version of the iconic chronograph movement in a modern automatic calibre 3600. It features a gray dial, tri-colored chrono sub-dials, and a sapphire case allowing for viewing of the rotor.

  • Condition: Excellent, some light wear on titanium bezel and case sides
  • Movement: El Primero cal 3600 automatic
  • Case size: 41mm diameter
  • Bracelet length: 7.25 inches, adjustable with two additional links
Posted at
Apr 19, 2026, 8:42 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 · $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