Zenith El Primero Chronomaster Open Rose Gold / Silver / Calf
Reference 18.3300.3604/69.C922
About this watch
The Zenith Chronomaster Open Rose Gold / Silver / Calf is a prime example of luxury watchmaking, combining elegant design with groundbreaking movement technology. This stunning timepiece features a rose gold case, silver sunburst dial, and calf leather strap, creating a sophisticated look that's perfect for formal occasions or casual outings. The round case measures 39.50 mm in diameter, ensuring it suits various wrist sizes. A sapphire crystal protects the dial, while an open case back allows you to admire the intricate El Primero 3604 movement within. This automatic chronograph movement operates at a remarkable frequency of 36,000 vibrations per hour, providing precision that few watches can match. With a central chronograph hand completing one full rotation every 10 seconds, you can measure elapsed time with remarkable accuracy. The calf leather strap adds a luxurious touch while ensuring comfort on the wrist. Certified as a chronometer, this watch has passed rigorous testing for accuracy and performance, making it perfect for those who value punctuality. With a power reserve of 60 hours, you can leave your watch unworn over the weekend and still find it ticking away on Monday morning.
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Key Features
- Automatic Chronograph Movement with 36,000 VPH Frequency
- Rose Gold Case with Sapphire Crystal
- Silver Sunburst Dial with Stick and Dot Indexes
- Calf Leather Strap for Comfort and Durability
- 1/10th of a Second Chronograph Functionality
- 100 Meter Water Resistance
- 60 Hour Power Reserve
Specifications
- Brand
- Zenith
- Family
- El Primero
- Model
- Chronomaster Open Rose Gold / Silver / Calf
- Reference
- 18.3300.3604/69.C922
- Movement Features
-
- Hours, Minutes, Small Seconds
- Chronograph, Column wheel
- Case
- Rose Gold 39.5mm
- Dial Color
- Silver
- Crystal
- Sapphire
- Water Resistance
- 100
Current Listings
![[WTS] Zenith El Primero ref. 01.0200.415 Big Blue circa 1973](https://preview.redd.it/zujkcpz25opg1.jpg?width=640&crop=smart&auto=webp&s=6172a6edf24444b804994837d00530cc73e24fb6)
Zenith El Primero ref. 01.0200.415 Big Blue circa 1973
The Zenith El Primero is a legendary high-frequency automatic chronograph movement first introduced in 1969, beating at 5 Hz and measuring elapsed time with precision. It features an oversized TV-shaped case with a vibrant brushed yachting metallic blue dial, often referred to as the 'Big Blue'. This watch has a unique 1970s aesthetic and is highly sought after by collectors.
- Condition: Excellent shape for its age, light signs of polish, private service in 2026
- Case size: 42mm
- Lug to lug length: 44h
- Thickness: 14.3 cc
![[WTS] Zenith El Primero Port Royal V](https://preview.redd.it/ppye1umklmpg1.jpg?width=640&crop=smart&auto=webp&s=e4878e5e0848b549eb1888e6575f69b0b021546e)
Zenith El Primero Port Royal V
The Zenith Port Royal V El Primero features symmetry, clarity, and attention to detail throughout its design, making it a visually stunning watch.
- Condition: Excellent cosmetically
- Case diameter: 40mm
- Lug width: 20mm
- Lug to lug: 47mm
![[WTS] Zenith 1969/1970 El Primero A385](https://preview.redd.it/yms0n0mi0hpg1.jpg?width=640&crop=smart&auto=webp&s=0ba10ce6b671c54396702705e5ec7d9a97dff1fc)
Zenith 1969/1970 El Primero A385
Up for sale is a magnificent El Primero A385 from 1969-1970, limited to approximately 2,400 pieces. It is powered by Zenith’s automatic El Primero movement, Caliber 3019 PHC/400.
- Condition: Excellent
- Movement: El Primero Caliber 3019PHC
- Power reserve: 50 hours
- Case diameter: 37mm
![[WTS] BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!](https://preview.redd.it/ezjnphjabbpg1.jpg?width=640&crop=smart&auto=webp&s=30304811bcd6fbf40844f3f77946ff352f687bc5)
BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!
The Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set is a dress watch with an incredible dial and one of the most mesmerizing dials. It features a clean, classic look with a Swiss army knife of functions and has a 43MM 18K solid yellow gold case.
- Condition: Mint
- Case diameter: 43mm
- Material: 18K solid yellow gold
- Movement type: El Primero automatic chronograph cal 4009
![[WTS] 2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL SET](https://preview.redd.it/s1gmjoheabpg1.jpg?width=640&crop=smart&auto=webp&s=971acfee25a64d3357444f9748fbde86316239ea)
2024 Zenith Defy Extreme Titanium Diver El Primero Sunray Blue Dial FULL SET
A modern iteration of the classic Defy diver, featuring a titanium case and a stunning blue starry sunray dial.
- Condition: Mint, with light wear
- Case size: 42.5mm diameter
- Movement: El Primero cal 3620 CS
- Depth rating: 30m water resistance
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
Zenith 42mm El Primero Chronomaster Open Heart Stainless Steel Complete
A Zenith El Primero Chronomaster Open Heart chronograph watch with a 42mm stainless steel case, featuring a Caliber Zenith El Primero 4061 movement and a date of manufacture in October 2014.
- Condition: Mint Condition
- Case diameter: 42mm
- Movement frequency: 36,000 VPH