Rado · Oval

Strap for D-Star Ceramos Chronograph Quartz

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter42 mm
ReferenceR15937153
FamilyOval
MovementETA caliber 251.262 hours, minutes, small seconds | date | Chronograph
CaseCermet

Spring bar

Swiss Standard universal spring bars

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

Straps for the Oval R15937153

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Oval R15937153, seen from the bench

The Rado Oval R15937153 is a chronograph with an elliptical Cermet case measuring 42mm in diameter and an 18mm lug width. It features an ETA caliber 251.262 automatic movement with hours, minutes, small seconds, date, and chronograph functions. The Cermet material, developed by Rado in the 1980s, offers scratch resistance and color stability while maintaining a uniform matte finish characteristic of the collection.

Frequently asked questions

What is the lug width of the Rado Oval R15937153?

The lug width of the Rado Oval R15937153 is 18mm. This standard represents the balance between the 42mm case diameter and the appropriate strap thickness to maintain harmonious wrist proportions without creating unwanted lateral protrusions.

Which strap is best suited for the Rado Oval R15937153?

For the Rado Oval R15937153, we recommend alligator straps for semi-formal contexts, vegetable-tanned calf leather for those who appreciate aesthetic ageing, cotton-polyester NATO straps for sporting use, or fluoroelastomer rubber for aquatic environments. The choice depends on the desired balance between the opaque rigidity of the Cermet case and the tactile quality of the strap.

How do I change the strap on the Rado Oval R15937153?

Strap change is performed by removing the horizontal spring bars that connect the strap to the case lugs. Using a spring bar tool, compress the internal spring to extract the bar, remove the worn strap, and insert the new 18mm strap through the lug holes, snapping the bar back into position. This operation requires precision: we recommend having it performed by a qualified watchmaker.

Are aftermarket straps compatible with the Rado Oval R15937153?

Yes, any strap with an 18mm lug width is compatible with the Rado Oval R15937153. Artisanal aftermarket straps often offer superior materials (certified alligator, vegetable tanning, premium rubber) compared to original straps, ensuring durability and evolved aesthetics over time.

How long does a leather strap last on the Rado Oval R15937153?

A premium leather strap (alligator or vegetable-tanned calf) lasts on average 3-5 years with moderate daily use. Longevity depends on exposure to moisture, sweat, and sunlight. A fluoroelastomer rubber strap has similar lifespan (4-6 years), while fabric NATO straps can exceed 5 years due to reduced localised wear.

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