Zenith
Chronomaster Sport
03.3100.3600/21.M3100
The El Primero legacy reborn in a modern sport chronograph
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Overview
The Zenith Chronomaster Sport, reference 03.3100.3600/21.M3100, is a 41 mm stainless steel sport chronograph powered by the celebrated Cal. El Primero 3600. Its black dial with tri-color subdial counters pays direct homage to the visual language that has defined the Chronomaster line for decades. The model represents Zenith's effort to position its most iconic movement within a contemporary, versatile case suited to everyday wear.
History
The Chronomaster Sport was introduced in 2021 as part of a broader refresh of the Chronomaster collection, itself the spiritual home of the El Primero movement since its debut in 1969. The Cal. El Primero 3600 at the heart of this reference beats at a high frequency that enables one-tenth-of-a-second chronograph measurement, a hallmark of the El Primero architecture. The tri-color counter layout — a signature aesthetic rooted in the original 1969 references — was deliberately retained to connect the Sport to its horological heritage while the 41 mm case and integrated-style bracelet addressed the expectations of a modern collector audience. Since its launch the Chronomaster Sport has become one of Zenith's most prominent current references.
Notable points
- Cal. El Primero 3600 measures elapsed time to one-tenth of a second, a defining technical trait of the El Primero lineage.
- The 41 mm stainless steel case strikes a deliberate balance between the brand's vintage proportions and contemporary sport-watch sizing.
- Tri-color subdial counters in blue, grey, and red directly echo the chromatic scheme of the original 1969 El Primero dials.
- The black dial provides strong contrast that enhances legibility of both the chronograph registers and the running seconds.
- Introduced in 2021, the Chronomaster Sport quickly established itself as a cornerstone of Zenith's current production lineup.
Specifications
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