Damasko · Chronographs

Strap for DC 57 Black

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
ReferenceDC57.black
FamilyChronographs
MovementETA caliber 7750 Hours, Minutes, Small Seconds | Date, Day | Chronograph
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 Chronographs DC57.black

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Chronographs DC57.black, seen from the bench

The Damasko DC57.black is a sports chronograph embodying German watchmaking philosophy: a precision instrument rather than a collectible timepiece. Founded in 1992 in Pforzheim, Damasko represents Baden-Württemberg horological expertise with no stylistic compromise. The case measures 40mm in diameter, stainless steel 316L per DIN 6944 corrosion standard. It houses the ETA caliber 7750, a column-wheel chronograph enabling measurement to one-tenth of a second, with three counters and date display. Case thickness is 14.5mm. The 20mm lug width is engineered to proportion correctly with the 40mm case diameter.

Frequently asked questions

What is the lug width of the Damasko Chronographs DC57.black?

The Damasko DC57.black features a 20mm lug width. This dimension is proportionally calibrated to the 40mm case diameter to ensure optimal aesthetic and functional integration. Always measure the lug with a digital calliper on the flat surface, several millimetres below the case shoulder.

Which strap is most suitable for the Damasko Chronographs DC57.black?

A strap in black or dark blue alligator is the most coherent choice with the minimalist, engineering-focused identity of the DC57.black. Alligator with regular grain amplifies the professional character. For daily use, vegetable-tanned calf works well; for sport use, butadiene rubber with parallel ribs is preferable.

How do I change the strap on my Damasko Chronographs DC57.black?

Position the watch face-down on a soft surface. Use a spring bar tool to gently push the lug spring inward, releasing the lug end. Repeat on both sides. Insert the new strap by aligning the holes, then reinsert the springs until a click indicates secure seating.

Are aftermarket straps compatible with the Damasko Chronographs DC57.black?

Yes, any strap with a 20mm lug width is compatible. It is essential to verify that the strap thickness (typically 3.5–4.5mm) allows stable seating between the case shoulders. Bespoke artisanal straps guarantee greater constructive precision than industrial standards.

How long does a leather strap last on a Damasko Chronographs DC57.black?

Durability depends on use and maintenance. A quality alligator or calf strap, worn regularly but not daily, lasts 4–6 years before showing signs of fatigue at the keeper. Vegetable tanning develops a natural patina that may extend useful life. Avoid prolonged exposure to salt sweat, continuous direct sunlight, and cream applications on surfaces.

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