Rado · Captain Cook

Strap for HyperChrome Captain Cook 42 Stainless Steel / Green / Bracelet

The HyperChrome Captain Cook 42 Stainless Steel / Green / Bracelet 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 straps All Rado

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Lug width20 mm

Case diameter42 mm

ReferenceR32505313 (aka: 01.763.0505.3.031)

FamilyCaptain Cook

MovementETA caliber C07.611 Hours, Minutes, Seconds | Date

Year2019

CaseCeramic, Stainless 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 Captain Cook R32505313

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Captain Cook R32505313, seen from the bench

The Rado HyperChrome Captain Cook R32505313 is the contemporary evolution of a 1962 diving icon, featuring a 42mm case combining high-resistance ceramic and stainless steel. Equipped with the ETA C07.611 Swiss movement (28,800 alt/h, COSC-certified), it offers water resistance to 300 meters and a sapphire crystal caseback. The 20mm lug width and legible dial with polished indices maintain the visual language of vintage marine chronographs while refusing ostentation.

Frequently asked questions

What is the lug width of the Rado Captain Cook R32505313?

The lug width of the Rado Captain Cook R32505313 is 20mm. This width accommodates a vast selection of aftermarket artisan straps suitable for medium wrists.

Which strap is best suited to the Rado Captain Cook R32505313?

We recommend vegetable-tanned leather or alligator straps for refined aesthetics, or NATO and rubber options for sportive functionality. The ceramic and steel case particularly complements aged leather straps with natural patina development.

How do I change the strap on my Rado Captain Cook R32505313?

Remove the strap by extracting the spring bars that secure it to the lugs using a spring bar tool. This operation takes minutes and requires no case disassembly. Ensure your replacement strap features a 20mm lug width .

Can I fit an aftermarket strap on my Captain Cook R32505313?

Yes. Any strap with a 20mm lug width is fully compatible with the R32505313. Our artisan 20mm straps provide superior aesthetics and craftsmanship, allowing complete personalisation of your timepiece.

What is the lifespan of a leather strap on the Rado Captain Cook R32505313?

A quality leather strap lasts 5–8 years under average daily wear. Shell cordovan and vegetable-tanned straps develop characteristic patina over time, improving aesthetically. Excessive moisture and direct sunlight accelerate ageing.

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

The atelier's website: casatimilano.com