Strap for Constellation Master Chronometer 39 Stainless Steel / Grey / Alligator

The lug width of the Constellation 131.13.39.20.06.002 is 24 millimeters. You can verify it by measuring the distance between the inner edges of the case lugs. This dimension is compatible with 24mm straps available in our catalog.

The best strap depends on your style and intended use. For classic elegance we recommend cognac brown alligator or black calf. If you prefer versatility, a brown shell cordovan strap develops a beautiful patina over time. For a sporty approach, a NATO strap or vulcanized rubber offers practicality without compromising on quality. All our 24mm straps are compatible with your model.

To change the strap on your Constellation 131.13.39.20.06.002 you will need a spring bar tool. Insert the tool into the groove under the lug, release the tension spring and extract the pin; repeat on the other side. Insert the new strap into the lug holes and reinsert the pins until you hear the click. If you prefer to entrust the operation to professionals, Casati Milano offers quick change service.

Yes, any 24mm strap with standard pins is compatible. However, quality varies significantly between manufacturers. Our handcrafted 24mm straps guarantee superior construction, noble leathers and precise finishing. Avoid cheap straps that wear out quickly: a good 24mm strap is an investment that accompanies your Omega for years.

Durability depends on the material and use. A quality calf strap lasts on average 3-4 years with daily wear; alligator and shell cordovan reach 5-7 years thanks to the natural resistance of the leather. Patina and minor marks are not defects but proof of authenticity and mindful use. Keep the strap away from excessive moisture and direct sunlight. With Casati Milano's 18-month warranty, any manufacturing defect is covered.