Rado · Captain Cook

Strap for Rado Captain Cook R32500323

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
ReferenceR32500323
FamilyCaptain Cook
MovementETA caliber C07.611 Hours, Minutes, Seconds | Date

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 R32500323

Selected for the 19 mm lug width · workshop selection

All 19 mm straps →

The Captain Cook R32500323, seen from the bench

The Rado Captain Cook features the ETA C07.611 caliber with hour, minute, second and date functions. The stainless steel case measures 37.30mm in diameter with 19mm lugs. The movement provides full time indication and a date complication.

Frequently asked questions

What is the lug width of the Rado Captain Cook R32500323?

The lug width (ansa width) of the Rado Captain Cook R32500323 is 19mm. This measurement indicates the distance between the lugs of the case and is essential for selecting compatible straps. To verify, use a digital calliper and measure from the inner edge of one lug to the inner edge of the opposite lug. Even half a millimetre of discrepancy will result in unstable fitment.

Which strap is best suited to the Rado Captain Cook R32500323?

The ideal strap depends on your usage pattern. For regular diving, we recommend 2mm FKM rubber or nylon ballistic NATO, both waterproof and salt-water resistant. For versatile daily wear, anilline calf leather or Tuscan vegetable-tanned leather in tobacco brown creates an elegant and robust pairing. Alligator represents the classic choice for formal contexts whilst maintaining the diver's sporting vocation.

How do I change the strap on the Captain Cook R32500323?

The Captain Cook R32500323 uses standard 16mm spring bars. Obtain a spring bar tool (fork-shaped device). Insert one prong into the hole of one spring, push gently downward to release tension, and extract the pin. Repeat on the other spring. Insert the new spring bars through the 19mm lug holes in the new strap, then reinsert the pin into the case lugs. The procedure takes less than two minutes.

Are aftermarket straps compatible with the Rado Captain Cook R32500323?

Yes, completely. Any strap with 19mm lugs is compatible with the R32500323. Quality aftermarket straps, manufactured from vegetable tanning, alligator, anilline calf or rubber, offer aesthetic and functional opportunities superior to original Rado straps. Ensure that spring bars are 1.8mm in diameter (standard).

How long does a leather strap last on the Rado Captain Cook R32500323 in humid environments?

Lifespan depends on tanning type and exposure. A vegetable-tanned strap, treated with natural waxes, resists moisture well and can last 4–6 years of regular use with maintenance (cleaning with a damp cloth, natural drying). Anilline calf, if not exposed to direct salt water, lasts 5–7 years. FKM rubber and NATO are virtually indestructible in humid environments. Avoid prolonged immersion with natural leather straps; favour rubber or NATO for swimming.

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