Zenith El Primero Chronomaster Open Stainless Steel / Silver / Bracelet

Reference 03.3300.3604/69.M3300

About this watch

When it comes to luxury watches, few brands command respect like Zenith. Renowned for its precision and craftsmanship, Zenith has introduced the Chronomaster Open Stainless Steel / Silver / Bracelet (Model: 03.3300.3604/69.M3300). This stunning timepiece is not just a watch; it's a statement. Let’s dive into the intricacies of this remarkable watch and see what makes it a standout in the world of horology. The Zenith Chronomaster Open boasts a beautifully crafted stainless steel case with a diameter of 39.50 mm, striking a perfect balance between presence and wearability. The sunburst finish gives it a striking appearance, reflecting light in a way that catches the eye without being overly flashy. The stainless steel bracelet enhances the watch's elegance while ensuring durability. It feels solid on the wrist, yet comfortable enough for daily wear. The design is both modern and classic, making it versatile enough to pair with various outfits. The dial of this watch is where the magic truly happens. The open heart design allows you to glimpse the inner workings of the watch, showcasing the exquisite craftsmanship of the El Primero movement. The silver color provides a clean and sophisticated look, while the stick and dot indexes add a touch of modernity. The hands are also designed with precision in mind; they’re stick-shaped, ensuring readability while maintaining an elegant aesthetic. The central chronograph hand is particularly noteworthy, making one full turn every 10 seconds, which is a unique feature that adds to the watch's sporty character. What sets the Chronomaster Open apart is its movement. The El Primero 3604 is a modified version of the 3600 that debuted in the CHRONOMASTER Sport. It’s an automatic chronograph that can measure and display time down to the 1/10th of a second. With a frequency of 36,000 vibrations per hour, the 3604 offers a level of precision that is hard to match. The movement features a stop-second mechanism, allowing you to set the time accurately, which is essential for a watch of this caliber. The El Primero 3604 boasts an impressive power reserve of 60 hours. This means you can take it off for a weekend and still find it ticking away when you put it back on. The automatic winding mechanism is efficient, utilizing a lubricant-free silicon escape wheel and pallet lever, which minimizes maintenance and enhances durability. With a water resistance of 100 meters, the Zenith Chronomaster Open is not just a pretty face. It’s built to withstand splashes and even brief swims. Whether you’re caught in a rain shower or enjoying a day at the beach, you can trust this watch to keep ticking without missing a beat.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Automatic chronograph movement (El Primero 3604)
  • Stainless steel case with sunburst finish
  • Sapphire crystal glass
  • 100m water resistance
  • 60-hour power reserve
  • Stop-second mechanism for accurate time-setting
  • High-frequency movement with 1/10th of a second chronograph

Specifications

Brand
Zenith
Family
El Primero
Model
Chronomaster Open Stainless Steel / Silver / Bracelet
Reference
03.3300.3604/69.M3300
Movement Features
  • Hours, Minutes, Small Seconds
  • Chronograph, Column wheel
Case
Stainless Steel 39.5mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Lady Zenith Chronomaster El Primero Factory Diamond Bezel Blue Dial 16.2150.400

Lady Zenith Chronomaster El Primero Factory Diamond Bezel Blue Dial 16.2150.400

Zenith - 16.2150.400 · $4,850
A Lady Zenith Chronomaster El Primero with a blue dial, diamond bezel, and 38mm stainless steel case.

  • Condition: Has some scratches on case and slight indication on side of bezel
  • Case diameter: 38mm
  • Material: Stainless Steel
  • Band type: Blue leather strap
Posted at
Apr 30, 2025, 7:57 PM
Active
Zenith El Primero Chronomaster Grande Date Moonphase 45mm Full Set

Zenith El Primero Chronomaster Grande Date Moonphase 45mm Full Set

Zenith - 03.2530.4047 · $7,250.007
A Zenith El Primero Chronomaster Grande Date Moonphase watch from 2018, featuring a 45mm case and a complete set including double boxed packaging, warranty card, and booklets.

  • Condition: Preowned - Excellent preowned condition with minor wear in form of light scratches
  • Case Size: 45mm diameter
  • Movement Condition: healthy movement
Posted at
Apr 29, 2025, 6:57 PM
Active
[WTS] Zenith Chronomaster Sport El Primero Black Dial 03.3100.3600 / Full Set

Zenith Chronomaster Sport El Primero Black Dial 03.3100.3600 / Full Set

41mm Zenith Chronomaster Sport with black dial and El Primero 3600 movement, water resistant to 100m.

  • Condition: running perfectly, minor wear on bracelet and crystal is clear with no scratches
  • Movement: Zenith El Primero 3600
  • Water Resistance: 100m
  • Power Reserve: 60hr
Posted at
Apr 29, 2025, 1:40 PM
Active
Zenith El Primero Winsor Annual Calendar Ref. 03.2070.4054 / 22.C708

Zenith El Primero Winsor Annual Calendar Ref. 03.2070.4054 / 22.C708

This Zenith El Primero Winsor Annual Calendar is a high-end watch that functions perfectly and comes with all original accessories.

  • Condition: Excellent
  • Diameter: 42mm
  • Bezel: Steel
  • Bracelet: Leather
Posted at
Apr 28, 2025, 8:26 PM
Active
2018 ZENITH El Primero Chronomaster Full Open 51.2081.400 Full Set Excellent Men

2018 ZENITH El Primero Chronomaster Full Open 51.2081.400 Full Set Excellent Men

Zenith - 51.2081.400 · $8,797.009
The Zenith El Primero Full Open Chronomaster is a stunning timepiece that showcases intricate craftsmanship and innovative design, making it a must-have for any serious watch collector.

  • Condition: Excellent
  • Case size: 42mm diameter
  • Bracelet options: Original brown leather strap and Original Zenith blue rubber strap
  • Movement: Automatic El Primero chronograph with 36,000 vibrations per hour
Posted at
Apr 28, 2025, 4:48 PM
Active
>>REDUCED FURTHER<< ZENITH DEFY EL PRIMERO CHRONOGRAPH LAND ROVER LIMITED EDITION

>>REDUCED FURTHER<< ZENITH DEFY EL PRIMERO CHRONOGRAPH LAND ROVER LIMITED EDITION

Zenith - 97.9000.9004/01.R787 · $6,850.007
The Zenith Defy El Primero 21 Land Rover Limited Edition is a 44mm titanium watch featuring an in-house movement that measures time to 1/100 second, with a dark gray dial and orange accents.

  • Condition: MINT
  • Case material: bead blasted titanium
  • Case diameter: 44mm
  • Movement type: in house El Primero movement
Posted at
Apr 27, 2025, 6:42 PM
Active
Zenith Defy El Primero 21 44MM Skeleton Dial Rubber Strap (49.9000.9004/78.R782)

Zenith Defy El Primero 21 44MM Skeleton Dial Rubber Strap (49.9000.9004/78.R782)

Zenith - 49.9000.9004/78.R782 · $7,800.008
A well-crafted chronograph that balances technical innovation with a contemporary design, featuring a skeleton dial and 1/100th of a second chronograph.

  • Condition: Excellent
  • Case material: Black Ceramic
  • Band material: Rubber
  • Water resistance: 100 meters (330 feet)
Posted at
Apr 26, 2025, 12:38 AM
Active
[WTS] Zenith El Primero 38mm Original Chronomaster Chronograph ref 03.3200.3600

Zenith El Primero 38mm Original Chronomaster Chronograph ref 03.3200.3600

Zenith - 03.3200.3600 · $4,999
This is a 38mm Zenith El Primero chronograph with a tri-colored panda dial and a 36,000 VpH movement.

  • Condition: Excellent
  • Movement Frequency: 5 Hz
  • Case Size: 38mm
Posted at
Apr 25, 2025, 4:15 PM
Active
WTS Zenith Defy El Primero 21 Blue Skeleton Dual Escapement Chronograph 44mm Titanium Complete 2018

WTS Zenith Defy El Primero 21 Blue Skeleton Dual Escapement Chronograph 44mm Titanium Complete 2018

Zenith - 95.9002.9004/78.R584 · $5,950.006
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
Posted at
Apr 24, 2025, 1:16 PM
Active