Strap for Slimline Manufacture Tourbillon

The Frederique Constant Manufacture FC-980DG4S6 features a lug width of precisely 20 millimetres. This dimension is measured from the inner shoulder of the springbar on one side to the other at the widest point. It is essential to verify this measurement before ordering a strap to ensure a perfect fit without any play or forcing.

The choice of strap depends on usage and aesthetic preference. For formal elegance, we recommend alligator in vegetable tanning or shell cordovan: both evolve over time and dialogue with the case's satin finish. For sports practicality, an Italian calf offers immediate softness. NATO straps in technical fabric reinterpret the model as an artifact-free instrument. All must respect the 20 millimetre lug width.

The FC-980DG4S6 is equipped with springbars. To remove the strap, gently press the lateral release pin towards the centre of the case whilst keeping the lug slightly bent inward. The lug should slide out without resistance. To install the new 20 millimetre strap, align the strap hole with the release pin and push until you hear a click. Avoid forcing: if the strap does not enter easily, verify the actual lug width.

Yes, any strap with a 20 millimetre lug width is mechanically compatible with the FC-980DG4S6. Artisanal straps in alligator, cordovan, calf and NATO of quality guarantee not only compatibility but often superior craftsmanship and aesthetics compared to OEM straps. We recommend verifying the total thickness of the strap (typically 3.5–4.5 millimetres) to avoid overly bulky attachments.

Durability depends on material and usage. An alligator or shell cordovan in good condition, worn daily with seasonal rotation, offers 5–8 years of aesthetic and functional life. A calf strap, being more delicate, guarantees 3–5 years. Natural leather wears through friction at the wrist and UV degradation: visible patina is a sign of natural aging, not defect. Casati Milano's 18-month warranty covers manufacturing defects during this period.