Zenith · El Primero

Strap for El Primero Chronomaster 38 Stainless Steel / Silver / Bracelet

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

Lug width20 mm
Case diameter38 mm
Reference03.2150.400/69.M2150
FamilyEl Primero
MovementZenith caliber El Primero 400 hours, minutes, small seconds | date | Chronograph, column wheel
Year2011 - 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 03.2150.400/69.M2150

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The El Primero 03.2150.400/69.M2150, seen from the bench

The El Primero was introduced by Zenith in 1969 as the first automatic high-frequency chronograph movement. It features the El Primero 400 caliber with column-wheel, functions for hours, minutes, small seconds, date and chronograph. The reference 03.2150.400/69.M2150 maintains the original technical characteristics of the movement with a frequency of 36,000 vibrations/hour.

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