Zenith · El Primero
Strap for El Primero Chronomaster 42 Stainless Steel / Anthracite / Calf / Classic Cars
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 diameter42 mm
Reference03.2046.4002/25.C771
FamilyEl Primero
MovementZenith caliber El Primero 400B hours, minutes, small seconds | date | Chronograph, column wheel
Year2016 - 2021
Water resistance100
Straps for the El Primero 03.2046.4002/25.C771
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 El Primero 03.2046.4002/25.C771, seen from the bench
The Zenith El Primero Chronomaster 03.2046.4002/25.C771 is a 42mm stainless steel chronograph featuring the legendary El Primero 400B movement, which operates at 36,000 vibrations per hour—an unmatched frequency among automatic chronographs since its introduction in 1969. The case houses a legible dial with chronograph subdials and offers 100-meter water resistance. The 20mm lug width is proportioned to the case diameter for optimal visual and structural harmony.
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