Zenith Chronomaster Sport Black

About This Watch

The Zenith Chronomaster Sport is the definitive modern expression of the legendary El Primero movement, which in 1969 became one of the world's first automatic chronograph calibers. This black-dial variant houses the El Primero 3600, beating at an extraordinary 36,000 vibrations per hour — five hertz — enabling the chronograph to measure elapsed time to 1/10th of a second, a feat displayed by the distinctive central chronograph seconds hand that completes one revolution every 10 seconds. The 41mm stainless steel case strikes a perfect balance between wrist presence and everyday wearability, while the ceramic tachymeter bezel insert adds sporty functionality and scratch resistance. The tri-color subdial registers — at 3, 6, and 9 o'clock — are a subtle nod to the original 1969 El Primero, though rendered here in a more restrained black and gray palette. The integrated bracelet features a quick-release mechanism and beautifully finished links with alternating polished and brushed surfaces. With 60 hours of power reserve and COSC certification, the Chronomaster Sport delivers the high-frequency precision that has made Zenith synonymous with chronometric excellence. This is a chronograph for enthusiasts who appreciate horological heritage paired with genuine technical superiority.