Zenith · El Primero
Strap for El Primero Stratos Flyback Two Tone
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 diameter45 mm
Reference51.2061.405/75.R516
FamilyEl Primero
MovementZenith caliber El Primero 405B hours, minutes, small seconds | date | Chronograph, column wheel, Flyback
Year2011
CaseRose Gold, Stainless Steel
Straps for the El Primero 51.2061.405/75.R516
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 51.2061.405/75.R516, seen from the bench
The Zenith El Primero Stratos Flyback Two Tone (ref. 51.2061.405/75.R516) features the legendary El Primero 405B automatic chronograph movement, oscillating at 36,000 vph for tenth-of-second precision. The 45mm case combines rose gold and stainless steel with a 20mm lug width, housing a column-wheel chronograph with flyback function, hour counter, minutes, small seconds, and date window. This configuration preserves the original 1969 design philosophy while maintaining contemporary proportions.
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