Strap for Constellation Quadra Quartz 28 Chronograph Stainless Steel / Diamond / MOP/ Alligator

The lug width of the 1847.76.61 is 18mm. This measurement represents the distance between the two inner holes of the lugs and is essential for selecting a compatible strap. Always measure from inner hole to inner hole with a digital caliper to ensure accuracy.

For the 1847.76.61 we recommend vegetable-tanned alligator for formal elegance, vegetable-tanned calf for everyday versatility, and shell cordovan for those seeking exceptional longevity and patina. The choice depends on occasion: black for formal wear, cognac brown for universal versatility, and burgundy or midnight blue for distinctive personality.

Remove the spring bars from the lugs using a specialized watchmaking tool (spring bar tool). Insert the flat tip of the tool into the small lateral hole of the lug, lift the bar slightly, and slide the old strap out of the holes. Insert the new 18mm strap, aligning the bar holes with the lugs, and lower the bar until it clicks into position. Verify that the strap is securely fastened on both sides.

Yes, any strap with an 18mm lug width is compatible with the 1847.76.61, provided it is of adequate construction quality. Verify that the total length (typically 120-140mm) fits your wrist. Artisanal leather straps of quality often offer better ergonomics than original integrated bracelets, with customization options in leather type, color, and finish.

A quality leather strap with vegetable tanning lasts an average of 3-5 years with moderate daily use. Alligator and shell cordovan can exceed 10 years if properly maintained. Durability depends on: intensity of use, personal perspiration, sun exposure, and maintenance (regular cleaning, annual conditioning). The strap tends to wear first at the closure hole; professional repair can extend its life by 2-3 years.