Zenith · El Primero

Strap for El Primero Chronomaster Open Stainless Steel / Grey 1969 / Rubber

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference03.2040.4061/23.R576
FamilyEl Primero
MovementZenith caliber El Primero 4061 hours, minutes, small seconds | Chronograph, column wheel
Year2017 - 2021
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the El Primero 03.2040.4061/23.R576

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The El Primero 03.2040.4061/23.R576, seen from the bench

The Zenith El Primero was introduced in 1969 as the first automatic high-frequency chronograph movement. It features the El Primero 4061 caliber with a column-wheel chronograph mechanism. The movement offers hours, minutes, small seconds and chronograph functions.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only