Rolex · Yacht-Master

Strap for Rolex Yacht-Master 126621

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

Lug width20 mm
Case diameter40 mm
Reference126621
FamilyYacht-Master
MovementRolex caliber 3235 hours, minutes, seconds | date | chronometer

Recommended spring bar

Spring bars Rolex Yacht-Master II 116688 gold — 20mm

Technical match for lug width and diameter · lug 20 mm · Ø 1.5 mm

All Rolex spring barsOpen →

Straps for the Yacht-Master 126621

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Yacht-Master 126621, seen from the bench

The Yacht-Master reference 126621 features a 40mm case made of stainless steel and 18k rose gold. It is powered by the automatic caliber 3235, chronometer-certified, with hour, minute, second and date indications. The lugs measure 20mm in width.

Frequently asked questions

What is the exact lug width of the Rolex Yacht-Master 126621?

The lug width of the Rolex Yacht-Master 126621 is 20 millimetres. This measurement corresponds to the free space between the case lugs and is non-negotiable for the installation of compatible straps. A strap with a lug width smaller or larger than 20mm would result in instability or potential damage to the case.

Which strap material is most recommended for the Yacht-Master 126621?

Alligator leather with vegetable tanning is the ideal choice owing to its fine grain that enhances the warm tones of the Rolesor Everose. However, shell cordovan offers superior constructive durability and extraordinary ageing characteristics, whilst a natural rubber strap returns the watch to its authentic sporting vocation. The choice depends on intended use and personal aesthetic preference.

How do you change the strap on a Rolex Yacht-Master 126621?

Strap replacement requires a fine-tipped screwdriver to extract the spring bars from the case. Position the watch on a soft surface, locate the lateral spring bars, and gently push inward to slide them out. Then insert the spring bars into the new strap, ensuring correct alignment and that the strap is centred. If inexperienced, professional service is advisable to avoid damage.

Is an aftermarket strap compatible with the Rolex Yacht-Master 126621?

Yes, any strap with a 20mm lug width is compatible with the Yacht-Master 126621, regardless of brand or manufacture. Artisanal manufacturers such as Casati Milano produce bespoke straps specifically dimensioned for this reference, guaranteeing constructive quality and finishes that match or exceed Rolex standards.

What is the typical lifespan of a leather strap for this watch?

A high-quality leather strap (alligator, shell cordovan, fine calf) typically lasts 3-5 years with regular use and proper maintenance. Shell cordovan with vegetable tanning tends to last longer owing to material density. Longevity depends on sun exposure, humidity, perspiration and frequency of use. Periodic replacement is recommended to maintain optimal aesthetics and functionality.

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