Strap for Constellation Master Chronometer 39 Stainless Steel / Yellow Gold / Silver / Bracelet

The Omega Constellation 131.20.39.20.02.002 has a lug width of 24 mm. This is the perpendicular distance between the strap attachment pins. Measure it with a digital caliper by positioning it between the two lug holes, or consult the official Omega documentation. Make sure not to confuse lug width with strap width: these are two different measurements.

For the bicolour Constellation 131.20.39.20.02.002, we recommend havana or cognac alligator to enhance the yellow gold, or vegetable-tanned calf leather for a more sustainable and distinctive approach. Shell cordovan offers a polished brilliance that reflects the polished finish of the gold. For sports contexts, premium rubber or NATO straps maintain practicality without sacrificing elegance.

The Constellation strap is changed by extracting the spring bars (small spring levers) from the lug attachment pins. Use a dedicated tool (spring bar tool) to compress the spring and slide out the old strap. Insert the new 24mm strap, ensuring that the terminals align perfectly with the lug holes. If you are unsure, consult a professional: an incorrect gesture could scratch the case.

Yes, a quality aftermarket strap with 24 mm width is perfectly compatible with the Constellation 131.20.39.20.02.002. Important: verify that the terminals (the ends that fit into the lug) are precise and do not have lateral play. An incorrectly proportioned strap could damage the pins. Milano Straps offers 24mm customizable straps tested on this model.

Durability depends on the material and usage. A quality alligator or calf leather typically lasts 3-5 years with moderate daily use. Shell cordovan, thanks to its density, can exceed 6-7 years. Vegetable tanning develops a natural protective patina, increasing resistance over time. Wear accelerates if exposed to sweat, frequent water or direct heat. Proper maintenance (periodic cleaning, controlled exposure) significantly extends the life of the strap.