Rado · HyperChrome

Strap for Hyperchrome Chronograph

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

Lug width20 mm
Case diameter45 mm
ReferenceR32276105
FamilyHyperChrome
MovementETA caliber 2894-2 hours, minutes, small seconds | date | Chronograph
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 HyperChrome R32276105

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The HyperChrome R32276105, seen from the bench

The Rado HyperChrome Chronograph model R32276105 features a 45mm case combining high-tech ceramic with stainless steel. It houses the ETA caliber 2894-2 chronograph movement with hours, minutes, small seconds, date, and full chronograph function. The 20mm lug width accommodates standard straps while maintaining the design's visual proportions on medium-sized wrists.

Frequently asked questions

What is the lug width of the Rado HyperChrome R32276105?

The certified lug width is 20mm. To measure correctly, position a digital calliper in the internal seat of the lug bar, perpendicular to the case axis. You should register precisely 20±0.2mm. This measurement does not correspond to the outer diameter of the spring bar tube, but rather to the clear distance between the two internal contact points where the strap rests during wear.

Which strap is recommended for the HyperChrome R32276105?

To enhance the aesthetic identity of this model, we recommend vegetable-tanned alligator with aged patina, which creates a fascinating dialogue with the polished ceramic. Alternatively, fine-grain calf for linear fluidity, NATO straps in polyamide for sporting practicality, or natural rubber for aquatic environments. We advise against shell cordovan, as the visual mass of the case risks overwhelming the colour delicacy.

How do you change the strap on the Rado HyperChrome R32276105?

Use a dedicated spring bar tool (a flat, rounded paddle) or a simple wooden stick. Insert the tool into the lateral holes of the lug bar from both sides, pushing simultaneously inward to release the spring bar from its seat. Once extracted, the old strap detaches. Insert the new strap into the opening, then reinsert the spring bar into the lateral holes until you hear the click of re-engagement. Repeat symmetrically on both lugs.

Is a 20mm aftermarket strap compatible with my Rado HyperChrome?

Yes, any strap manufactured with 20mm lug width is compatible with your R32276105. Compatibility is guaranteed by the universal spring bar system, provided the strap thickness does not exceed 4mm and the total length permits correct fastening at the wrist. We recommend artisanal straps of certified quality to preserve the watch's constructive excellence.

How long does a leather strap last on the Rado HyperChrome?

Durability depends on material quality and intensity of use. An artisanal vegetable-tanned alligator offers 3-5 years of daily wear, during which patina evolves naturally. Premium calf with proper care guarantees 2-3 years. Naturally vulcanised rubber resists 4-6 years. Primary wear occurs in the bending zones (lugs). Prolonged humidity exposure reduces leather longevity, whilst rubber is less sensitive to external agents.

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.

Request an appointment →

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