Strap for Constellation Quartz 27 Polished Stainless Steel / Red Gold / Silver

The Constellation 123.20.27.60.02.003 has a lug width of 19mm, the standard for compact women's models. The width is measured from the inner point of the upper lug to the inner point of the lower lug, using a caliper or flexible ruler. This dimension is essential for selecting compatible straps, as an undersized or oversized lug width compromises both the aesthetics and security of the mounting.

The best strap depends on the context of use. For formal occasions we recommend vegetable-tanned alligator in burgundy or dark brown, which enhances the two-tone gold-steel design. For daily wear, fine-grained Italian calf offers versatility and durability. For those preferring practicality, a nylon or cotton NATO strap on a steel deployant clasp is washable and reversible. The ideal choice combines material, colour and construction according to personal habits.

Changing the strap on the Constellation 123.20.27.60.02.003 requires a specific tool (spring bar tool). Position the watch with the caseback facing upwards, insert the tip of the tool into the small lateral slot of the spring bar and gently push to release the end. Once loosened, the spring bar slides out of the lug allowing the lug to be removed. Proceed in reverse order to fit the new strap. It is advisable to consult a professional watchmaker if you lack experience, to avoid scratching the case.

Any strap with a 19mm lug width is compatible. Specialist catalogues (such as Milano Straps) offer straps in alligator, shell cordovan, calf, heavy cotton (NATO) and rubber with varying thicknesses and colours. It is essential to verify not only the lug width, but also the thickness at the root: a strap that is too thick will be difficult to insert into the lugs without forcing. We recommend consulting the retailer if you are uncertain about exact compatibility.

The lifespan of a leather strap depends on material, frequency of use and care. A vegetable-tanned alligator strap typically lasts 3-5 years with moderate use (3-4 days per week), developing a natural patina over time. Calf leather has a similar lifespan, but the material is more sensitive to sweat and humidity. Nylon NATO straps last 5-7 years thanks to the robustness of the fabric. Rubber loses elasticity after 4-6 years of constant sun exposure. Regular maintenance (drying after perspiration, gentle cleaning) significantly extends longevity. Milano Straps offers an 18-month warranty on made-to-measure straps created by the Casati Milano atelier.