Frederique Constant Slim Line FC-306V4STZ9

The Frederique Constant Slim Line FC-306V4STZ9 takes an 18 mm watch band.

Frederique Constant · Slim Line

18mm

lug width

Shop 18 mm bands

Every watch that takes 18 mm →

Lug width: 18 mm
Case diameter: 40 mm
Reference: FC-306V4STZ9
Family: Slim Line
Case material: Titanio, Oro rosa
Model: Slimline Automatic Titanium

Bands that fit

Cut and stitched in Milano, in the width this watch takes.

Hammered Calfskin Watch Strap Green with Ecru Stitching€98

Hammered Black Calfskin Strap — Ecru Stitching€98

Italian Calfskin Rally Strap in Cognac€110

Red Hammered Calfskin Single Pass Watch Strap€80

Matte Blue Alligator Strap€195

See every 18 mm band →

Will a strap close on your wrist?

Set for this watch: 40 mm of case and 18 mm between the lugs. Add your wrist and see where a standard strap would close.

Your wrist

Watch length, lug to lug

Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.

Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.

Why ready-made straps come in one length →

Sizing notes

18 mm is the gap between the lugs, so a 18 mm band goes in without adapters. Whether it sits flush against a 40 mm case depends on how that case is shaped.
Inside the Slim Line family the lug width is not one number: it runs 12, 18, 20 mm. This reference is the 18 mm one, so a band bought for another Slim Line may not fit it. Why the size changes inside a family →
18 mm is not a common size: only 3,965 of the 41,485 watches measured take it (9.6%), so ready-made choice at this width is narrower than at 20 or 22 mm. Every watch that takes 18 mm →