Zenith · Chronomaster Original
Strap for Chronomaster Original Triple Calendar Rose Gold / Black
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter38 mm
Reference18.3400.3610/21.C911
FamilyChronomaster Original
MovementZenith caliber El Primero 3610 hours, minutes, small seconds | date, day, month | Chronograph, column wheel | moonphase
Year2025
CaseRose Gold
Straps for the Chronomaster Original 18.3400.3610/21.C911
Selected for the 20 mm lug width · workshop selection
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Matte Dark Gray Alligator Strap€195
Millennium Green Alligator Strap — Minimal Stitching€149
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Calfskin Strap Light Blue€98
The Chronomaster Original 18.3400.3610/21.C911, seen from the bench
The Zenith Chronomaster Original 18.3400.3610/21.C911 features a 38mm rose gold case housing the legendary El Primero 3610 automatic movement with 36,000 vibrations per hour. This chronograph integrates column wheel mechanism, date, day, month, and moonphase complications. The watch requires a 20mm lug width for proper aesthetic and functional compatibility with the original integrated bracelet architecture.
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