Strap for DS Chronograph Automatic Stainless Steel / Silver

The lug width is 21mm. This measurement is taken between the outer edges of the watch lugs. To verify compatibility with aftermarket straps, measure precisely with a digital calliper: exactly 21mm ensures perfect fit without lateral play or forcing.

For a heritage watch with a 42.80mm case, a calf leather strap with vegetable tanning is the most harmonious choice, as it develops natural patina over time and reflects the watch's historical vocation. Alternatively, dark brown alligator offers strength and formal elegance; a grey NATO strap guarantees daily versatility and quick changes.

Remove the strap using a flat-lever tool (spring bar tool) to compress the internal springs of the lugs and slide them out gently. Insert the new strap by aligning the holes with the lugs, then release the springs until you hear or feel the safety click. Check that the springs are fully inserted and the strap does not move laterally.

Yes, any strap with a 21mm lug width is compatible. Choose straps from reliable manufacturers that respect the 21mm standard; avoid generic straps with imprecise manufacturing tolerances. Bespoke artisanal straps guarantee maximum quality and optimal fit.

A quality leather strap with vegetable tanning typically lasts 3-5 years of daily use before showing significant wear. Longevity depends on maintenance, sun exposure and environment (humidity): natural leather ages and loses elasticity over time. Alligator straps last longer; FKM rubber straps have similar lifespan but resist water better.