Strap for Constellation Quartz 24 Polished Red Gold / Diamond / MOP Supernova

The lug width of the Constellation 123.55.24.60.55.005 measures exactly 20 millimeters. This dimension represents the space between the case attachment lugs and is the fundamental parameter for selecting a compatible strap. Measuring the lug width correctly requires a digital caliper positioned perpendicularly between the mounting lugs.

For the 24 millimeter Constellation in rose gold, we recommend alligator in cognac or dark brown tones, which amplifies the warmth of the gold without competing chromatically. Vegetable-tanned calf leather is a classic choice that develops patina over time in parallel with the gold's oxidation. For summer versatility, FKM rubber maintains lightweight proportions. Avoid materials that add more than 5 millimeters to overall thickness.

To change a 20mm strap, position the watch on a soft support and use a spring bar tool (the specific screwdriver with a slot) to compress the strap's elastic pin. Insert the tool's slot into the pin's groove, compress gently and simultaneously extract the old strap. The new strap must have the end holes perfectly aligned with the pins before insertion. Never force: if it doesn't slide in smoothly, verify that the lug width is exactly 20mm.

Yes, provided the strap is specifically labeled for 20mm lug width. Compatibility is guaranteed by dimensional measurement: any strap with 20mm lug width will mount on your Constellation's attachments without play or excess. Milano Straps offers 20mm straps in various leathers (alligator, calf, shell cordovan) and materials (NATO, rubber) with customization options (size, initials, thread color).

Durability depends on usage, leather type, and care. A quality artisanal alligator or shell cordovan strap typically lasts 3–5 years with daily wear. Vegetable-tanned calf leather resists wear for 2–4 years before showing creasing at stress points. The Casati Milano atelier provides artisanal straps with an 18-month warranty. Factors that reduce lifespan: prolonged sun exposure, fresh water, intense perspiration. Storing the strap in a dry place when not worn extends its useful life.