Zenith El Primero Chronomaster Open Stainless Steel / Black / Rubber
Reference 03.3300.3604/21.C822
About this watch
The Zenith Chronomaster Open is a masterpiece of luxury watchmaking, combining stunning design with exceptional technical prowess. This stainless steel timepiece boasts a 39.50mm case that strikes a perfect balance between robustness and elegance, while the sunburst black dial provides an excellent backdrop for the luminescent stick and dot indexes. The El Primero 3604 movement is a high-frequency automatic chronograph that measures time with incredible precision, featuring a frequency of 36,000 vibrations per hour and a power reserve of 60 hours. With its modified design, open base plate and bridges create a stunning view of the movement, showcasing Zenith's mastery in timekeeping. The Chronomaster Open is not just a timepiece, but a conversation starter, a piece of history, and a testament to the art of Swiss watchmaking.
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Key Features
- 39.50mm stainless steel case
- Sunburst black dial with luminescent indexes
- El Primero 3604 high-frequency automatic chronograph movement
- Frequency: 36,000 vibrations per hour
- Power reserve: 60 hours
- Modified design with open base plate and bridges
- Sapphire crystal glass
- Water resistance: 100m
Specifications
- Brand
- Zenith
- Family
- El Primero
- Model
- Chronomaster Open Stainless Steel / Black / Rubber
- Reference
- 03.3300.3604/21.C822
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph, Column wheel
- Case
- Stainless Steel 39.5mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 100
Current Listings

ZENITH DEFY EL PRIMERO LAND ROVER Limited Edition
The Zenith Defy El Primero 21 Land Rover Limited Edition features a dark gray dial with orange accents and an in-house El Primero movement.
- Condition: MINT
- Case material: bead blasted titanium
- Diameter: 44mm
- Movement: in house El Primero

Zenith El Primero Ref. 30.0500.400/21
A rare Zenith El Primero Ref. 30.0500.400/21 from the early 2000s, featuring a 38mm 18k yellow gold case and black dial.
- Condition: Pre-owned, with patina on the dial
- Case material: 18k yellow gold
- Diameter: 38mm
- Movement: serviced Zenith caliber El Primero 400