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TAG Heuer · Monaco

Strap for Monaco Calibre 11 Stainless Steel / Blue / Gulf

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll TAG Heuer
Lug width20 mm
Case diameter39 mm
ReferenceCAW211R.FC6401
FamilyMonaco
MovementTAG Heuer caliber 11 hours, minutes, small seconds | date | Chronograph
Year2017 - 2010
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Monaco CAW211R.FC6401

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Monaco CAW211R.FC6401, seen from the bench

The Monaco was introduced in 1969 as the first automatic chronograph with a square case. It is powered by the automatic Caliber 11 with chronograph, small seconds and date functions. The case features the distinctive square shape that represented a break from the traditional circular designs of the era.

Frequently asked questions

What is the lug width of the TAG Heuer Monaco CAW211R.FC6401?

The lug width of the TAG Heuer Monaco CAW211R.FC6401 is 20 millimetres. This dimension is specific to the Monaco and is standard for TAG Heuer sports chronographs. Precise measurement is achieved by positioning a digital calliper perpendicular to the two lugs at the centralisation point of the strap attachment.

Which strap material is most suitable for the TAG Heuer Monaco CAW211R.FC6401?

The TAG Heuer Monaco CAW211R.FC6401 pairs ideally with alligator straps in medium grain (cognac brown, black, or sigarro) or vegetable-tanned calf leather. These materials respect the Monaco's minimalist sporting heritage. For dynamic use, NATO in Cordura or FKM rubber are valid and functional options. Shell cordovan represents the ultimate luxury choice, developing a natural patina over time.

How do I change the strap on my TAG Heuer Monaco CAW211R.FC6401?

Strap replacement requires a specialised tool for removing bayonet-style spring bars. Position the watch on a soft, stable surface and locate the small springs at the lugs. Using the dedicated tool, compress the lower spring to free the old strap. Insert the new spring bars into the replacement strap and gently secure to the lugs, ensuring the spring clicks into position. If unsure, the Casati Milano atelier offers a bespoke strap-change service with technical consultation.

Is there an aftermarket strap compatible with the TAG Heuer Monaco CAW211R.FC6401?

Yes. The CAW211R.FC6401 is compatible with any artisanal strap featuring a 20-millimetre lug width. MilanoStraps.it offers a comprehensive collection of 20mm straps customisable in leather, colour, initials and stitching thread. The Casati Milano atelier also creates bespoke sartorial straps with direct leather selection and brushed-steel deployante. All products guarantee immediate compatibility with the case lugs.

How long does a leather strap last on a TAG Heuer Monaco CAW211R.FC6401?

A quality artisanal leather strap typically lasts 3-5 years with daily wear, provided adequate maintenance is observed: protection from excessive moisture, periodic cleaning and conditioning with specialist products. Vegetable-tanned or shell cordovan leather develops a patina over time, enriching the watch's aesthetic. A premium alligator or calf strap crafted by Casati Milano carries an 18-month warranty and can be regenerated or partially replaced if necessary. Durability depends on the chosen material and conditions of use.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only