Zenith · El Primero

Strap for El Primero Chronomaster Grande Date Brown

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

Lug width

20mm

20 mm straps All Zenith

Lug width20 mm

Case diameter46 mm

Reference51.2161.4047/75.C713

FamilyEl Primero

MovementZenith caliber El Primero 4047 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Moonphase

CaseRose Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the El Primero 51.2161.4047/75.C713

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The El Primero 51.2161.4047/75.C713, seen from the bench

The Zenith El Primero was introduced in 1969 as the first high-frequency automatic chronograph movement. It mounts the El Primero 4047 calibre with column-wheel chronograph functions, moon phases and date. The reference 51.2161.4047/75.C713 features off-centered small seconds and hour and minute indication.

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