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.
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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] 1970's Movado Zenith El Primero Mens Vintage Chronograph 01.0180.434 with Papers](https://external-preview.redd.it/EZwfwd6EhuDM1tKHU-MRBEvA6eWd5IPlomJLTcLok-g.jpeg?auto=webp&s=7ef1261d3a4e662f50720eac8334421098f70bae)
1970's Movado Zenith El Primero Mens Vintage Chronograph 01.0180.434 with Papers
Movado Zenith
- 01.0180.434
·
$3,950
A 1970s Movado Zenith El Primero Mens Vintage Chronograph featuring a stainless steel case, original silver dial, and automatic chronograph movement. It comes with papers, including a zenith manual and warranty card.
- Condition: Very nice preowned condition with light scratches and wear, minor crystal chips, patina on hands and dial
- Case material: Stainless Steel
- Case dimensions: 38mm diameter
- Bezel material: Stainless Steel

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The Zenith Defy El Primero 21 Land Rover Limited Edition is a unique timepiece that features a bead blasted titanium case and a dark gray dial with orange accents. It boasts the new El Primero in-house movement, which measures time to 1/100 second, and comes with a range of accessories.
- Condition: MINT
- Case diameter: 44mm
- Movement: El Primero in-house movement
Zenith El Primero 03.2522.400
A Zenith El Primero Skeleton in 45mm size, functioning as it should with the exception of a slight reset issue.
- Condition: Pre-owned with some functional issues (chronograph resets slightly before 12)
- Case Size: 45mm diameter
- Full Kit: yes
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[US] Zenith Defy El Primero 21 Ultra Blue - 44mm - 97.9001.9004/81.R946 - Full Set
The Zenith Defy El Primero 21 Ultra Blue is a 44mm watch that functions perfectly mechanically.
- Condition: Fantastic condition, no hairlines on clasp or case
- Case size: 44mm diameter
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Zenith Defy Skyline El Primero Chronograph 42mm Silver Dial 03.9500.3600 Full Set
42mm Zenith Defy Skyline El Primero Chronograph with silver dial, stainless steel case, and 1/10th of a second chronograph function.
- Condition: has some light scratches on bezel and bracelet
- Case size: 42mm
- Dial color: silver

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

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

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