Strap for Constellation Master Chronometer 39 Sedna / Blue / Bracelet

The Omega Constellation 131.50.39.20.03.001 is fitted with a 24 millimeter lug width. This measurement is specific to the model and determines compatibility with any aftermarket strap. To verify the correct width, measure the linear distance between the two case lugs using a ruler.

For a Constellation in Sedna Gold, deep brown vegetable-tanned alligator represents the most harmonious choice: the natural U-grain enhances the richness of the precious case and develops a patina that ages with elegance. Alternatively, smooth vegetable-tanned calf leather offers refined minimalism, while shell cordovan introduces chromatic depth and structure.

Changing the strap requires a specific tool (spring bar remover or punch). Position the watch in a watchmaker's vise, locate the tension springs invisible at the sides of the lugs, and with controlled lateral movement, release the lugs from the case slots. Insert the new strap ensuring the springs click correctly into the case slots. If uncertain, contact an authorized service center.

Yes, provided the strap has an exact 24 millimeter lug width. Quality aftermarket artisanal straps are fully compatible with your Constellation. Ensure the leather is watchmaking grade and that the tension springs are robust to guarantee secure mounting.

Durability depends on the leather chosen and usage patterns. A quality watchmaking-grade alligator or shell cordovan with vegetable tanning typically lasts 3-5 years in daily use. Smooth calf leather tends to wear more quickly (2-4 years). Vegetable tanning, not synthetic, develops a natural patina that imparts charm even after aging. Occasional or seasonal use significantly extends the strap's lifespan.