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Frederique Constant · Slim Line

Strap for Frederique Constant Slim Line FC-306V4STZ9

The 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
18 mm strapsAll Frederique Constant
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Lug width18 mm
Case diameter40 mm
ReferenceFC-306V4STZ9
FamilySlim Line
MovementFrederique Constant caliber FC-306 Hours, Minutes | Date
CaseTitanium, Rose Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 18 mm · Ø 1.8 mm double flange · industry standard, no brand part number

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Slimline Automatic Titanium — watch

Your watch with our straps

Slim Line FC-306V4STZ9 with Vintage Brown Calfskin Strap — Natural Patina
Slim Line FC-306V4STZ9 with Brown Italian Leather Strap
Slim Line FC-306V4STZ9 with Black Saffiano Strap Ecru Stitching

Calf, Brown

Vintage Brown Calfskin Strap — Natural Patina

€98

★ 4.9 · 11

See the strapAll 18 mm straps

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Real photos of the strap and the case. No generated images.

What I'm asked about the Frederique Constant Slim Line FC-306V4STZ9

What strap size does the Frederique Constant Slim Line FC-306V4STZ9 take?

The Frederique Constant Slim Line FC-306V4STZ9 needs 18 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Frederique Constant Slim Line FC-306V4STZ9 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Frederique Constant Slim Line FC-306V4STZ9?

Yes, in 18 mm leather. On a 40 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the Frederique Constant Slim Line FC-306V4STZ9?

A thin 18 mm alligator. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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

The atelier's website: casatimilano.com

Updated on · by Antonio Zichichi