Frederique Constant · Slim Line
Strap for Slimline Automatic Titanium
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
18mm
Lug width18 mm
Case diameter40 mm
ReferenceFC-306V4STZ9
FamilySlim Line
MovementFrederique Constant caliber FC-306
Hours, Minutes | Date
CaseTitanium, Rose Gold
Straps for the Slim Line FC-306V4STZ9
Selected for the 18 mm lug width · workshop selection
Vintage Black Calfskin Leather Strap€80
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Vintage Olive Green Calf Leather Watch Strap€80
Hammered Yellow Strap with Ecru Stitching€98
Hammered Black Calfskin Strap — Ecru Stitching€98
The Slim Line FC-306V4STZ9, seen from the bench
The Frederique Constant Slimline Automatic Titanium FC-306V4STZ9 is a contemporary dress watch from the Swiss manufacture founded in 1988. This 40 mm case combines grade 5 titanium with 18k rose gold indices and bezel, powered by the proprietary FC-306 automatic movement with double barrel, manual winding, date window, and 42-hour power reserve. The 18 mm lug width accommodates standard watch straps, while the sapphire crystal with anti-reflective coating and screw-down crown ensure 30 m water resistance 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