Zenith · El Primero
Strap for El Primero Chronomaster Power Reserve Blue
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
Reference03.2085.4021/51.C700
FamilyEl Primero
MovementZenith caliber El Primero 4021 hours, minutes, small seconds | Chronograph, column wheel | power reserve indicator
CaseStainless Steel
Straps for the El Primero 03.2085.4021/51.C700
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 03.2085.4021/51.C700, seen from the bench
The Zenith El Primero Chronomaster 03.2085.4021/51.C700 features the legendary El Primero 4021 automatic chronograph movement beating at 36,000 vph, delivering 1/10 second precision. The 42mm stainless steel case houses a dial with integrated power reserve indicator, backed by up to 50 hours of autonomy. The 20mm lug width accommodates the integrated bracelet, maintaining Zenith's design continuity from case to wrist.
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