El Primero

The Zenith El Primero made history in 1969 as one of the first automatic chronograph movements, and its legacy continues in the current 42mm models. Revered for its high-frequency 36,000 vph movement, the El Primero’s ability to measure to 1/10th of a second is a technical achievement that set it apart from contemporaries. Collectors value its direct lineage to the original A386, but the 42mm models offer a modern take with bolder wrist presence and updated materials.

Reference numbers like 03.2040.400 and 03.2080.400 distinguish between dial variations and case finishes, with the former typically featuring classic tri-color subdials and the latter offering more contemporary aesthetics. The in-house El Primero 400 caliber remains the centerpiece, prized for its column wheel chronograph and smooth operation. Sapphire casebacks are common in these versions, letting you admire the movement in action.

Pricing varies with dial configuration, bracelet or strap options, and limited editions—special releases or anniversary models often command a premium. Water resistance of 100m makes the 42mm El Primero practical for daily wear, and the case profile sits comfortably despite the larger diameter. When considering this model, focus on condition, completeness (box and papers), and whether you prefer the classic or modern dial layouts, as these factors weigh most on long-term value and enjoyment.