Frederique Constant · Index

Strap for Index Automatic Stainless Steel / Silver / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter43 mm
ReferenceFC-303S6B6B
FamilyIndex
MovementFrederique Constant caliber FC-303 hours, minutes, seconds | date
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 Index FC-303S6B6B

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Index FC-303S6B6B, seen from the bench

The Frederique Constant Index reference FC-303S6B6B is powered by the in-house FC-303 automatic caliber, with indications of hours, minutes, seconds and date. The movement features a power reserve and an integrated date display mechanism. The case adopts classic proportions with a traditional winding crown and a dial with applied indices.

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