Strap for Constellation Master Chronometer Small Seconds 34 Stainless Steel / Sedna Gold / Brown - Diamond

The lug width of model 131.23.34.20.63.001 is exactly 21mm. This measurement represents the internal distance between the two lugs (the metal projections) at the ends of the case. To verify it, measure with a digital caliper between the lugs without including them in the measurement. This specification ensures that the strap adheres perfectly without slipping.

For the Constellation 131.23.34.20.63.001, Louisiana alligator with medium-fine grain is recommended, which creates an elegant textured contrast with the bicolor case. Alternatively, vegetable-tanned calf offers greater daily comfort with a patina that evolves over time, or shell cordovan for those seeking maximum durability. Rubber is ideal for those preferring a sport-chic versatility, especially in dark tones.

The strap on the Constellation 131.23.34.20.63.001 is changed using two spring bars (strap springs) positioned on the lateral lugs of the case. Use a dedicated tool called a 'spring bar removal tool' to gently push the spring toward the inside, which allows you to extract the lug. After extracting the lug, the strap disengages easily. The operation takes approximately 5 minutes and is non-invasive: you can do it yourself or at a trusted watchmaker.

Yes, absolutely. The Constellation 131.23.34.20.63.001 accepts any strap made with a 21mm lug width, whether in leather, rubber, or fabric. High-quality aftermarket straps allow you to personalize your watch while maintaining perfect mechanical compatibility. Always verify that the lug width is exactly 21mm before purchase to avoid discrepancies.

The lifespan of a leather strap depends on use, tanning, and material quality. A high-quality alligator strap offers an average lifespan of 3-5 years with daily wear; vegetable-tanned calf tends to last 2-4 years; shell cordovan can exceed 7-10 years thanks to the intrinsic resistance of the material. The aging of leather is a desirable characteristic: the patina that forms is a sign of authenticity and conscious use. Proper maintenance (avoid prolonged water exposure, dry quickly after humidity exposure) significantly extends the strap's life.