Zenith · El Primero

Strap for El Primero Sport Silver

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

Lug width20 mm
Case diameter46 mm
Reference03.2280.400/01.C713
FamilyEl Primero
MovementZenith caliber El Primero 400B hours, minutes, small seconds | date | Chronograph, column wheel
Year2015
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 03.2280.400/01.C713

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The El Primero 03.2280.400/01.C713, seen from the bench

The Zenith El Primero 03.2280.400/01.C713 Stratos Flyback Striking 10th is the modern evolution of a legend born in 1969. This 46mm stainless steel sports chronograph features the El Primero 400B caliber beating at 36,000 vibrations per hour, delivering tenth-of-second resolution with integrated flyback mechanism and acoustic striking 10th function. The 20mm lug width requires purpose-built straps without compromise for proper ergonomic connection between wrist and case.

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