Technical Archive

Damasko
Chronographs DC57— lug 20mm

Damasko Chronographs DC57: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

DC 57

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Damasko DC57
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

DC57

Movement

ETA caliber 7750 Hours, Minutes, Small Seconds | Date, Day | Chronograph

The Heritage

The Damasko DC57 is a chronograph powered by the automatic ETA 7750 caliber with hours, minutes, small seconds, date, day and chronograph functions. The model features 20mm lugs and is part of the Chronographs collection by the German brand. The movement configuration offers the essential complications for a sporty chronograph.

FAQ

What is the exact lug width of the Damasko Chronographs DC57?

The Damasko DC57 features a lug width of 20mm. This measurement is the historical standard of European sports chronographs. To verify compatibility with aftermarket straps, measure the distance between the two lugs with a digital calliper: the result must be exactly 20mm. Even variations of 0.5mm can compromise the correct fit of the strap on the case.

Which type of strap is most suitable for the Damasko Chronographs DC57?

For the DC57, we recommend three main options: (1) alligator or vegetable-tanned calf leather, which imparts formal elegance and develops a unique patina over time; (2) NATO strap in robust nylon, ideal for tactile use and versatility; (3) vulcanised rubber, the most practical choice if used as a tool in high-stress environments. Avoid excessively glossy straps: the brushed finish of the case requires a strap with a muted texture for visual coherence.

How do I change the strap on my Damasko DC57?

To change the strap, obtain a spring bar removal tool or consult a watchmaker. Position the watch on a soft surface to prevent scratches. Locate the elastic pins within the lugs: apply gentle pressure inward with the tool while simultaneously lifting the lug. Once the old strap is freed, slide the new one through the lugs, ensuring the elastic pins lock correctly. Verify that the strap is symmetrical and aligned with the case before wearing.

Can I use an aftermarket strap compatible with the Damasko DC57?

Yes, the Damasko DC57 is fully compatible with quality 20mm aftermarket straps. Ensure the strap is designed for this exact width. Artisan Italian leather straps, woven NATO straps, and vulcanised rubber all function perfectly. Artisan-grade quality additionally guarantees superior durability compared to generic straps, with positive aesthetic ageing in the case of leather.

How long does a leather strap last on the DC57 case?

The longevity of a leather strap depends on tanning method, stitch quality, and usage. A vegetable-tanned alligator or calf leather strap, if properly maintained, lasts 3–5 years with daily wear. Vegetable-tanned leather ages progressively, developing a rich dark patina. To extend durability, avoid prolonged moisture exposure, periodically apply a natural leather conditioner, and consider alternating with a second strap to allow the material to breathe. After 4–5 years, even an exceptionally quality strap may require replacement for aesthetic rather than functional reasons.