Strap for Constellation Master Chronometer Small Seconds 34 Stainless Steel / Sedna Gold / Diamond / MOP / Bracelet

The lug width is precisely 21mm. This measurement represents the internal distance between the lug ends of the case and is essential for selecting a compatible strap. Any strap declared 21mm will fit correctly into the lugs, provided its thickness is standard (4-5mm at the extremities).

Warm brown or hazel alligator is the most harmonious choice, as it echoes the Sedna Gold caseback and the luminosity of the mother-of-pearl dial. Sophisticated alternatives include vegetable-tanned calf in burgundy or aged brown, or wine-colored shell cordovan that enhances the depth of the dial.

Use a spring bar tool to gently remove the springs from the lugs. Insert the bifurcated tip into the lateral slot of the spring, apply pressure inward and upward simultaneously to free the spring from the lug. Once both springs are extracted, the strap slides away. The reverse process installs the new strap.

Yes, any 21mm strap is physically compatible. Verify that the strap is designed for integrated lugs (Omega type) and that the thickness at the extremities is standard. Consult the 21mm strap catalog on milanostraps.it for verified and certified options.

A quality leather strap (alligator, calf, shell cordovan) with daily use in normal conditions lasts between 2 and 4 years. Longevity depends on exposure to sweat, humidity, sunlight and maintenance. Semi-annual conditioning with specific wax significantly extends the strap's lifespan.