Damasko · Three-hand Models

Strap for DA 20

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

Lug width20 mm
Case diameter40 mm
ReferenceDA20
FamilyThree-hand Models
MovementETA caliber 2836-2 hours, minutes, seconds | date, day
CaseStainless 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 Three-hand Models DA20

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Three-hand Models DA20, seen from the bench

The Damasko DA20 is part of the brand's Three-hand Models line of professional watches. It features the automatic ETA caliber 2836-2 movement with hours, minutes, seconds, date and day of the week indication. The lugs accept 20mm width straps.

Frequently asked questions

What is the lug width of the Damasko DA20?

The lug width of the Damasko DA20 is 20mm. This measurement represents the distance between the two lugs on the case where the strap attaches. It is essential to verify that your chosen strap measures exactly 20mm in width to ensure a precise and secure fit, avoiding lateral movement.

Which strap is most suitable for the Damasko DA20?

For the DA20, a strap in alligator or calf leather with vegetable tanning represents the finest choice, as it reinforces the watch's instrumental philosophy. Colours such as dark tobacco brown, absolute black, or deep burgundy integrate harmoniously with the 40mm satin case. For intensive use, a natural rubber strap or a heavy canvas NATO fabric strap are both functional and elegant alternatives.

How do I change the strap on my Damasko DA20?

To change the strap, you must remove the spring bars connecting the strap to the case lugs. Use a dedicated spring bar tool or consult a watchmaker. Position the tool tip into the small slot on the spring bar, apply gentle pressure to release the internal spring, and withdraw the old strap. Insert the new strap by threading the spring bars into their designated slots, ensuring the spring snaps back into position.

Can I use an aftermarket-compatible strap on the Damasko DA20?

Absolutely. Any 20mm-width strap is compatible with the DA20. Quality aftermarket straps often offer greater variety in materials, colours, and finishes compared to original manufacturer offerings. Verify that the strap width measures between 19.8 and 20.2mm at the case contact point to ensure precise compatibility.

How long does a natural leather strap last on the Damasko DA20?

A quality vegetable-tanned leather strap on a daily-wear watch like the DA20 typically lasts 3 to 5 years, depending on frequency of use, water exposure, and climate conditions. The ageing of leather is not a defect but part of its natural evolution: it develops patina, colours shift, and texture transforms. Minimal maintenance—periodic cleaning and occasional conditioning—significantly extends longevity, transforming the strap into a tangible chronicle of elapsed time.

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