Rado · Captain Cook

Strap for Hyperchrome Captain Cook 37 Ghost Captain The Rake & Revolution

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter37 mm
ReferenceR32500105 (aka: 01.763.0500.3.110)
FamilyCaptain Cook
MovementETA caliber C07.611 Hours, Minutes, Seconds | Date
CaseCeramic, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Captain Cook R32500105 (aka: 01.763.0500.3.110)

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Captain Cook R32500105 (aka: 01.763.0500.3.110), seen from the bench

The Rado Captain Cook R32500105 (01.763.0500.3.110) is a contemporary evolution of a 1962 classic, featuring an integral black ceramic and satin steel case. The 37.30 mm monolithic design eliminates galvanic corrosion at joints while offering superior abrasion resistance. Powered by an ETA Caliber C07.611 quartz movement with date function, this professional diving watch maintains its original sporting soul through radical material engineering and protected crown positioning.

Frequently asked questions

What is the lug width of the Rado Captain Cook R32500105?

The Rado Captain Cook R32500105 features a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 19 millimetres. This dimension is standard for the Captain Cook collection and allows fitting of compatible strap widths at the same measurement. Measuring the lug width means verifying the distance between the two horizontal lug pins (spring bar holes) that secure the strap: in the case of the R32500105, this spacing is precisely 19 mm. This is the only acceptable width for this model: an 18 mm strap would be too tight and create stress on the lugs, whilst a 20 mm strap would leave unsightly gaps.

Which strap do you recommend for the Rado Captain Cook R32500105?

For the Captain Cook R32500105, we recommend straps in <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> leather in dark brown or black shades, which enhance the contrast with the black ceramic case. Alternatively, a dark NATO strap maintains the sporting identity without formality compromises. If you require water-resistant properties for saltwater or prolonged humid conditions, an FKM (Viton) rubber strap with leather loop provides robust construction and practical daily wearability. For those seeking premium materials, hand-stitched <a href="/pages/termine-glossario/alligatore">alligator</a> leather develops an organic patina over time that ages beautifully and distinctly.

How do you change the strap on the Captain Cook R32500105?

Changing the strap requires extraction of the two horizontal lug pins (spring bars) that traverse the case lugs. Use a dedicated spring bar tool, inserting it from the underside of the lower lug and applying light pressure to retract the internal spring. When the pin emerges from the lugs, extract it completely. You can then detach the old strap from the pins and fit the new one. Reinsert the pins through the lower and upper lugs, sliding the strap until you hear an audible click indicating full engagement. Verify proper strap positioning and ensure no friction exists between strap and case. If uncertain about the procedure, Casati Milano atelier (by appointment) can execute the change with professional tools and inspect the lugs for wear.

Is the Rado Captain Cook R32500105 compatible with aftermarket straps?

Yes, the R32500105 is fully compatible with aftermarket straps featuring a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 19 mm. Any strap manufacturer, whether artisanal or industrial, working at this standard width will provide perfectly interchangeable products. Compatibility depends solely on lug width (19 mm) and overall strap length, which must accommodate both wrist and the case's rear. Milanostraps.it offers a dedicated collection of 19 mm straps in leather, NATO, <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> and rubber, all tested for fitment on contemporary Rado watches.

How long does a leather strap last on the Rado Captain Cook R32500105?

Leather strap longevity depends on tanning method, thickness and usage conditions. A <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> strap measuring 1.4–1.6 mm thick, mounted on a sports watch like the Captain Cook (subject to greater humidity and stress), has an estimated lifespan of 3–5 years with daily wear. With occasional or careful use, it may extend to 7 years. Patina and minor creasing are normal characteristics of natural ageing. A <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a> strap, denser and more resilient, can achieve 8–10 years of service. To extend lifespan, avoid prolonged contact with chlorine, unrinsed seawater salt and concentrated sweat without drying. Store straps in a dry, well-ventilated location when unworn.

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