Frederique Constant · Horological Smartwatch
Strap for Horological Smartwatch Black Dial / Leather Strap
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
ReferenceFC-285B5B6
FamilyHorological Smartwatch
MovementFrederique Constant caliber FC-285 hours, minutes | date
Year2015
CaseStainless Steel
Straps for the Horological Smartwatch FC-285B5B6
Selected for the 20 mm lug width · workshop selection
Vintage Black Calfskin Leather Strap€80
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Red Suede Strap with Stitching — Milano Straps€90
Black Calfskin NATO Strap€80
The Horological Smartwatch FC-285B5B6, seen from the bench
The Frederique Constant Horological Smartwatch FC-285B5B6 is a hybrid timepiece combining Swiss watchmaking with smart functionality, launched in 2015. It features a 42mm stainless steel 316L case with analogical dial, date window, and integrated FC-285 mechanical movement beating at 28,800 vph with approximately 38 hours power reserve. The watch includes a 20mm lug width and rejects touch screens in favor of minimalist design with discrete sensors for activity tracking.
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