Strap for Constellation Quartz 27 Brushed Red Gold / Diamond / MOP Omega

The lug width of the Constellation 123.55.27.60.55.015 is 18mm. This measurement, taken internally between the case lugs, is fixed and compatible exclusively with 18mm straps. Always verify the measurement before ordering an aftermarket strap.

For the Constellation 123.55.27.60.55.015 in rose gold, alligator represents the most coherent choice from an aesthetic and temporal perspective: the natural grain and vegetable tanning amplify design precision while developing a patina synchronized with the gold. Cognac calf and burgundy shell cordovan offer elegant formal alternatives.

Use a spring bar tool to remove the spring bars that secure the strap to the lugs. Insert the flat end of the tool into the dedicated hole in the lug, gently lift the bar until the spring retracts, then remove the old strap. Repeat the reverse procedure to install the new 18mm strap.

Yes, all 18mm straps are compatible with the Constellation 123.55.27.60.55.015, provided the lug width is exactly 18mm. Avoid 16mm, 20mm, or other sizes as they may damage the case lugs.

A quality leather strap (alligator, calf, shell cordovan with vegetable tanning) lasts 3-5 years with moderate daily use. Durability depends on intensity of use, ambient humidity, and maintenance level. Shell cordovan, due to its natural water resistance, tends to last longer than standard smooth calf.