Frederique Constant · Manufacture
Strap for Slimline Moonphase
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
ReferenceFC705S4S6B
FamilyManufacture
MovementFrederique Constant caliber FC-705
Hours, Minutes | Date | Moonphase
CaseStainless Steel
Straps for the Manufacture FC705S4S6B
Selected for the 20 mm lug width · workshop selection
Vintage Black Calfskin Leather Strap€80
Hammered Calfskin Strap Light Blue€98
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Vintage Olive Green Calf Leather Watch Strap€80
Hammered Black Calfskin Strap — Ecru Stitching€98
The Manufacture FC705S4S6B, seen from the bench
The Frederique Constant Manufacture FC705S4S6B is a 42mm stainless steel watch with a proprietary FC-705 movement visible through a skeleton dial and transparent caseback. This model features a moon phase complication, central date window, and applied steel hands, representing the brand's philosophy of accessible haute horlogerie. The 20mm lug width accommodates the refined proportions of the case, while water resistance reaches 42 meters for daily wear.
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