Strap for Constellation Quartz 24 Brushed Stainless Steel / Diamond / Black Star

The lug width of the Constellation 123.15.24.60.01.001 is 16mm. This is the internal distance between the two metal lugs where the strap is inserted. Verify by measuring the space between the lugs with a digital caliper: you will find exactly 16mm. This specification is crucial when ordering compatible straps.

The Constellation 123.15.24.60.01.001 suits multiple materials depending on use and aesthetic preference. Black or brown alligator offers brilliance and classic formality. Vegetable-tanned Italian calf provides a patina that evolves over time, ideal for those who appreciate natural aging. Shell cordovan delivers a hard consistency and sophisticated inner sheen. For a sporty-casual approach, NATO straps or rubber ensure practicality and durability without maintenance.

Strap replacement requires a specific tool – the spring bar tool – to compress the small springs that hold the strap to the lugs. Position the tool in the small groove on the side of each lug, press gently to retract the spring, then remove the old strap. Insert the new strap by aligning the holes with the lugs and release the spring to secure. If uncertain, consult a professional: Casati Milano offers replacement service and can advise on the ideal model choice.

All straps with 16mm lug width are compatible with the Constellation 123.15.24.60.01.001. You can choose from ready-made options available online at Milano Straps – from alligator to calf, from shell cordovan to technical fabrics – or commission a bespoke creation at the Casati Milano atelier with customization of leather, color, size, and stitching. The 18-month warranty on Casati straps covers manufacturing defects.

The lifespan of a natural leather strap depends on intensity of use, tanning method, and maintenance. A vegetable-tanned strap worn daily maintains full functionality for 2–4 years; beyond this period the leather tends to thin where wrist movements create friction. Alligator and shell cordovan, being structurally denser leathers, can last 4–6 years with proper care. Occasionally brushing with a soft eraser and storing the watch in a dry environment significantly extends strap life. Casati Milano provides an 18-month warranty and can refurbish worn straps.