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

Brand New Zenith Chronomaster Original El Primero Chronograph Reverse Panda | 03.3200.3600/21.C903 | June 2025 Zenith warranty

Zenith - 03.3200.3600/21.C903 · $6,900

The Zenith Chronomaster Original El Primero Chronograph Reverse Panda is a discontinued model that comes with a brand new Zenith leather strap and a deployant clasp. It features the original protective stickers still intact.

Condition: Brand new, unused
Warranty Start Date: June 2025
Shipping Method: USPS Registered Mail
Shipping Restriction: CONUS only

Posted at

May 2, 2026, 5:07 PM

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Zenith Defy Skyline Chrono Silver - El Primero - Full Set 2024 - Integrated Bracelet & Green Strap w/ Deployant - $7,850

Zenith - 03.9500.3600/01.I001 · $7,850

This Zenith Defy Skyline Chronograph features the El Primero 3600 movement, a high-beat automatic chronograph with a 60-hour power reserve and 35 jewels. The watch has a silver/white 'Starry Sky' dial and is available in full set, including an integrated stainless steel bracelet and OEM Zenith green rubber strap.

Condition: Excellent
Movement: El Primero 3600, automatic chronograph
Frequency: 36,000 vph (5Hz)
Power reserve: 60 hours

Posted at

May 2, 2026, 12:50 PM

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[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

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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

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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

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[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

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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

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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

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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

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