During LVMH Watch Week in Milan, the new Zenith models particularly caught my attention.
It's no secret that I am a big fan of this brand. Zenith constantly amazes with its combination of outstanding watch designs and legendary calibers. To my surprise, at LVMH Watch Week 2024, Zenith focused on the Defy collection, introducing five new models with modern designs and one inspired by vintage style. I had the opportunity to personally explore the latter - the Zenith Defy Revival A3643. This model became the fifth in the series dedicated to the classic look of the original Defy from the late 1960s. It's time to find out how relevant vintage charm is in 2026.
History of the Zenith Defy Revival A3643 Model
It should be specified: technically, this is the fifth model in the series dedicated to the classic Defy design, not counting the Defy Chronograph released by Zenith late last year in collaboration with USM. These Defy Chronograph USM models combined the lines of El Primero and Defy, creating a remarkable quartet that once again proved that the Zenith team knows how to leverage the brand's vintage potential to create new releases. This strategy has been key to the brand's success over the past decade, along with accurate reissues of classic archive models.
The classic in this line is the Zenith Defy A3643 from 1969, which was revived for LVMH Watch Week. This is another confirmation that at the end of the 60s, Zenith created truly outstanding designs. The modern Defy Revival series began with the A3642 model in 2022 - a remake of the first Defy. Then followed the red-dialed A3691, the blue A3690, and the discreet Defy Revival Shadow, introduced at the beginning of 2023.
After that, the brand released two modern versions of vintage diver Defy, and the new Zenith Defy Revival A3643 continues the line of classic Defy models. The main difference is the dial design.
Dial Design and Features
The first Defy Revival models used distinctive rectangular retro indexes. In the A3643, narrower, pointed hour markers are used, giving the watch a modern look. This design was already used in the original 1969 model and today provides a visual update that many fans will prefer over unusual, almost fluted markers.

Key Features of the Dial:
- Sunray silver dial
- Full set of 12 identical hour markers
- Open minute track with luminescent rectangles at each hour
- Date window between the 4 and 5 o'clock markers
- Minimalist text harmoniously complementing the design
- Three signature hands, including a second hand with an orange tip - an homage to the original model

Zenith Defy Revival A3643 Case and Materials
The Defy Revival A3643 case is made of stainless steel and has an octagonal 'Miura' shape with a 14-sided bezel. Its dimensions are 37 mm in diameter, 13.6 mm thick, and 44 mm long. Despite the retro styling, the case design remains relevant nearly six decades later.

Zenith Elite 670 Movement: Reliability and Quality
The back of the case is fitted with sapphire crystal, through which the Elite 670 caliber is visible - a branded Zenith movement already used in previous Defy Revival models. The movement operates at a frequency of 28,800 semi-oscillations per hour and provides a power reserve of up to 50 hours.

Movement Finishing Includes:
- Pearlage (pearl texture)
- Côtes de Genève (Geneva stripes)
- Skeletal rotor with the Zenith star logo
This contemporary Elite caliber is a reliable and well-finished engine for the reissued classic.

Gay Frères Style Bracelet: Features and Practicality
The model comes with a signature Gay Frères style bracelet with 'ladder' links, which is a Zenith hallmark. It features the absence of central links, creating a unique appearance.

Advantages and Disadvantages of the Bracelet:
- Attractive retro style that adds charm to the model
- Fits well on the wrist, comfortably wrapping around it
- Open structure of the bracelet improves ventilation
- However, the clasp feels insufficiently secure for a watch priced at €7,900 - it seems flimsy, especially the locking mechanism
- There is a rattling noise from the clasp when moving, which can be irritating

Zenith understands these nuances and uses a more traditional three-row bracelet for Chronomaster Original models, which is more practical and visually familiar. Similarly, I would like to see such a bracelet for the Chronomaster Revival A384 - my favorite model from the 1960s.

Wearing and Impressions of the Zenith Defy Revival A3643
Despite some complaints about the clasp, the 'ladder' style bracelet is perfectly suited for this model, adding individuality. The watch fits comfortably on the wrist, and the proportions of all elements and the visual balance of the dial are executed impeccably.

The comfort when wearing is particularly impressive - not only I, but also my expert colleagues immediately appreciated the model's comfort. This confirms that a successful design remains relevant over time.

Final Conclusions on the Zenith Defy Revival A3643
Zenith Defy Revival A3643 is a successful reissue of the classic 1969 model with a modern approach to design and execution quality. For vintage watch enthusiasts, there is the option to purchase the original, but 'ladder' type bracelets often did not age well, making the new version more attractive.

Main Advantages of the Model:
- Relevance of the design while maintaining vintage charm
- High wearing comfort
- Reliable and beautifully finished Elite 670 movement
- Unique bracelet emphasizing individuality

This model further strengthened my attachment to Zenith and inspired me to start my own collection of the brand's watches - probably starting with the El Primero A384 and its successors. Nevertheless, the Defy Revival A3643 served as an excellent reminder of my respect for the brand and sparked interest in Zenith's future releases in 2024.


Thus, the Zenith Defy Revival A3643 demonstrates how classic design can seamlessly blend with modern technology and requirements while maintaining historical value and functionality.