Rado · Oval

Strap for D-Star Automatic

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
ReferenceR15609172
FamilyOval
MovementETA caliber 2824-2 Hours, Minutes, Seconds | Date
CaseCeramic

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 R15609172

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Oval R15609172, seen from the bench

The Rado Oval R15609172 features an asymmetrical high-tech ceramic case with a distinctive sculptural profile rooted in the design revolution that began in 1961. The case measures 42mm in diameter and houses an ETA caliber 2824-2 Swiss movement, equipped with date complication and hour-minute-second functions. The watch belongs to the Oval family and requires an 18mm lug width for strap compatibility, with the ceramic material offering scratch resistance and temperature stability for everyday wear.

Frequently asked questions

What is the lug width of the Rado Oval R15609172?

The lug width of the Rado Oval R15609172 is 18mm. This measurement indicates the distance between the lugs on the case where the strap attaches. To verify strap compatibility, measure the internal distance between the two attachment points using a digital calliper, ensuring it matches exactly 18mm. Do not confuse lug width with dial width—these are entirely separate parameters.

Which strap is best for the Rado Oval R15609172?

There is no universal choice; it depends on usage and aesthetic preference. For formal contexts, we recommend genuine alligator or vegetable-tanned calf leather: both create an elegant transition with the case's ceramic material. For sporty or casual wear, a vulcanised rubber strap amplifies the model's technical character. Nylon NATO straps offer chromatic versatility and quick changes. The fundamental rule: the strap must be exactly 18mm wide at the contact base.

How do you change the strap on a Rado Oval R15609172?

The Rado Oval uses a straight lug attachment system. To change the strap: 1) obtain a spring bar tool or a hammer and replacement pin; 2) place the watch on a soft surface; 3) insert the tool tip into the lateral opening of the lug to depress the spring bar; 4) extract the pin and separate the strap from the case; 5) align the new strap with the holes; 6) reinsert the pin with gentle pressure until you hear a click. If you are inexperienced, consult a professional watchmaker.

Is the Rado Oval R15609172 strap compatible with other 18mm watches?

Yes, provided the other watch also features an 18mm lug width. However, bear in mind that the Rado Oval's case geometry is asymmetrical and highly distinctive: a strap designed for this case may not fit visually with other models. Additionally, always verify the attachment type (straight lugs, derived lugs, etc.). Milano Straps offers 18mm straps specifically selected and tested for compatibility with the Rado Oval R15609172.

How long does a leather strap last on the Rado Oval R15609172?

The durability of a leather strap depends on material quality, tanning method, and daily wear. High-quality alligator or vegetable-tanned calf leather, worn regularly (5–6 days per week), typically lasts 3–5 years before requiring replacement. Sun exposure, perspiration, and temperature fluctuations accelerate ageing. A vulcanised rubber strap lasts longer (5–8 years) due to reduced sensitivity to these factors. Regular maintenance (gentle cleaning and natural wax conditioning for leather) extends service life.

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