In watchmaking, iconic brands are defined by signatures that endure: a distinctive case shape, a groundbreaking material, or a movement whose reputation is inseparable from the brand. For Zenith, that signature is the El Primero.
Introduced in 1969, it was the world’s first automatic, integrated high-frequency chronograph calibre, made possible by advanced engineering and an industrialised production method rare at the time. Built on some of the earliest modern production lines, it could measure elapsed time to 1/10th of a second. That frequency also endows Zenith watches with a distinctive trait: a central chronograph hand that completes a sweep around the dial every 10 seconds.
Long associated with the Chronomaster collection, this flourish is especially pronounced in the Chronomaster Sport, where the high frequency movement is visible, linking the El Primero’s historic precision to a distinctly contemporary design language.
Now that signature takes a different form: Zenith’s new Chronomaster Solo Sport, powered by the El Primero 3620 calibre (a movement derived from the El Primero 3600) but without a chronograph function.
Without a chronograph complication, the Chronomaster Solo Sport pushes the high-frequency movement to express time with style as its primary focus. The result is a watch that serves as a handsome and ultra-reliable everyday companion.
Its 40-mm stainless steel case is accented by a unidirectional rotating ceramic bezel, delivering a more functional, contemporary edge suitable for everyday wear and more active use. Crown protectors flank the screw-down crown, reinforcing the case construction and helping secure 20 ATM of water resistance.
Inside lies the El Primero 3620, beating at 36,000 vibrations per hour and preserving the high-frequency signature of the El Primero since its debut. It features a silicon escapement, a stop-seconds mechanism, and bi-directional winding with a star-shaped rotor, offering a power reserve of 60 hours.
The dial visualises high frequency as a design language. Crafted from ceramic, its structured surface is built around a repeated 45-degree Z motif, echoing the movement’s rhythm and vibration. Depending on the version, the motif appears either engraved on a sunray-finished white ceramic dial or set against a polished black or brown ceramic surface, giving each model a distinct expression of the same idea.
Created exclusively for the Chronomaster Solo Sport, it introduces a new visual code within Zenith’s Chronomaster collection. The seconds-hand counterweight reflects the watch’s bold design, while a “shark tooth” minute track along the dial edge—paying homage to classic Zenith styles—makes it easier to read and segment the time.
The watch sits on a three-link stainless steel bracelet with Zenith’s Zenclasp folding clasp. Introduced earlier in the year, the new clasp includes an integrated micro-adjustment mechanism for fast, precise resizing on the wrist without tools.
Three versions are offered with ceramic dials and bezels in black, white, or brown, displaying hours, minutes, seconds, and the date. For a cleaner, purist look, the black model is also available without the date. Launched at Geneva Watch Days 2026, the Chronomaster Solo Sport will be sold at Zenith boutiques, online and by authorised retailers worldwide.
