Strap for Constellation Manhattan 25 Quartz Yellow Gold / MOP

The lug width of the Constellation 131.50.25.60.55.002 is 16 millimeters. This dimension represents the distance between the case attachment pins. To verify it correctly, use a digital caliper by measuring the free space between the two upper (or lower) pins internally. Ensure that the strap you purchase is specifically designated for 16mm lug width, as an incorrect measurement would result in aesthetic and structural issues.

For the 25mm Constellation in yellow gold, alligator represents the noble choice par excellence thanks to its geometric texture and natural grain. Alligator in dark brown, chocolate, or warm burgundy shades dialogues elegantly with the golden reflections of the case. Alternatively, vegetable-tanned calf offers an evolving patina over time, while shell cordovan is reserved for those who appreciate characteristic creasing and tactile density. We advise against fabric or rubber straps for this compact luxury model.

Changing the strap requires the use of a specific tool: the springbar tool. Position the watch on a soft surface with the caseback facing upward. Insert the flat tip of the springbar tool into the case interstitium, gently pushing the pin inward until it clicks out. Repeat the operation for the second pin. Once both pins are removed, the old strap will lift freely. To install the new strap, align the pins in the holes and gently push until you hear the insertion click. Verify the attachment by pulling it slightly.

Yes, it is possible to mount quality aftermarket straps on the Omega Constellation 131.50.25.60.55.002, provided they respect the 16mm lug width measurement. Compatible straps must be dimensioned for the exact space between the pins, ensuring both correct aesthetics and fastening security. We recommend relying on manufacturers specializing in luxury straps who understand the proportions and materials appropriate for a compact yellow gold watch. Avoid generic straps with approximate measurements.

The lifespan of a natural leather strap depends on the frequency of use, the quality of the tanning, and exposure to environmental factors. A high-quality alligator or shell cordovan strap with vegetable tanning can last from 4 to 6 years in daily use before requiring replacement. Calf leather has a slightly shorter lifespan, approximately 3 to 4 years. Exposure to sweat, moisture, and UV rays accelerates aging. Regular maintenance—gentle cleaning, drying, and occasional conditioning—significantly prolongs the strap's useful life. Casati Milano offers an 18-month warranty on all bespoke straps.