Strap for DS First Ceramic Chronograph Inverted Panda

The lug width of the Certina DS First C0144171105101 is 22mm. This measurement is standard for mid-to-high-tier tool watches and allows comfortable passage of the strap through the case attachment lugs. To verify compatibility with any aftermarket strap, measure the internal distance between the attachment points using a digital calliper.

For the Certina DS First, we recommend Tuscan leather from vegetable tanning (tobacco brown or black), which develops a natural patina over time, or alligator leather for those who value tactile refinement and a well-defined geometric texture. For sports use or humid environments, F1 rubber or cotton canvas NATO ensures maximum durability and practicality.

Place the watch on a soft, flat surface. Use a spring bar tool or plastic lever: insert the instrument into the small gap between the lug and case, applying outward pressure to release the attachment pin. Repeat on the opposite side. Do not force—the pins retract in both directions. Once the lugs are free, align the new strap's holes with the lugs and push the pins until they click into place.

Yes, provided the strap is explicitly designated as compatible with 22mm lugs. Milano Straps offers bespoke artisanal straps in leather, NATO, and rubber specifically engineered for this measurement, guaranteeing perfect fit and structural compatibility with your C0144171105101's pins. Always verify that the strap includes the bridge bar at the correct width.

A Tuscan leather strap from vegetable tanning, worn daily with proper care, typically lasts 3–4 years before fibres weaken at points of maximum flexion near the lugs. Factors such as humidity, perspiration, and frequency of wear accelerate degradation. Alligator leather, owing to superior fibre density, can last 4–5 years. F1 rubber resists 2–3 years under intensive use.