Zenith · Chronomaster Original

Strap for Chronomaster Original Triple Calendar Stainless Steel / 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 diameter38 mm
Reference03.3400.3610/38.C911
FamilyChronomaster Original
MovementZenith caliber El Primero 3610 hours, minutes, small seconds | date, day, month | Chronograph, column wheel | moonphase
Year2024
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 Chronomaster Original 03.3400.3610/38.C911

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Chronomaster Original 03.3400.3610/38.C911, seen from the bench

The Zenith Chronomaster Original 03.3400.3610/38.C911 continues the legendary lineage that began with the 1969 El Primero, the first high-frequency automatic chronograph at 36,000 beats per hour. This stainless steel 38mm case features the El Primero 3610 movement, offering hours, minutes, small seconds, date, day, month, chronograph, and moonphase functions. The tricompax dial and tachometric bezel reflect original design codes. Water-resistant to 100 meters, it accommodates a 20mm lug width strap.

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