Frederique Constant · Manufacture

Strap for Classic Tourbillon Perpetual Calendar Manufacture / 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 diameter42 mm
ReferenceFC-975MC4H6
FamilyManufacture
MovementFrederique Constant caliber FC-975 hours, minutes, small seconds | date, day, leap year, month, perpetual calendar | tourbillon escapement
Year2019
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 Manufacture FC-975MC4H6

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Manufacture FC-975MC4H6, seen from the bench

The Frederique Constant Manufacture FC-975MC4H6 Classic Tourbillon Perpetual Calendar features the FC-975 caliber with perpetual calendar complication, tourbillon, and fixed escapement. The 42mm stainless steel case with satin finish houses these complex mechanisms visible through the sapphire caseback. The 20mm lug width accommodates aftermarket straps while maintaining balanced proportions between case mass and strap surface.

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