Zenith · El Primero

Strap for El Primero Winsor Annual Calendar Black Eye

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
Reference03.2070.4054/22.C708
FamilyEl Primero
MovementZenith caliber El Primero 4054 hours, minutes, small seconds | date, annual calendar, day, month | Chronograph, column wheel
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 03.2070.4054/22.C708

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The El Primero 03.2070.4054/22.C708, seen from the bench

The Zenith El Primero was introduced in 1969 as the first high-frequency automatic chronograph movement. It is equipped with the El Primero 4054 caliber with column-wheel chronograph, annual calendar and small seconds functions. The reference 03.2070.4054/22.C708 integrates date, day and month indications in addition to the 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.

Request an appointment →

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