Strap for Elegant Collection Automatic 9 Stainless Steel / Red Gold / Silver

The lug width (misura ansa) of the Longines Elegant L4.910.5.77.7 is 20 millimetres. This measurement is the standard for watches with case diameter between 38 and 40mm and was selected to maintain balanced proportions between the two-tone case and the wrist. A 20mm strap inserts into the spring bar lugs without forcing, guaranteeing precise fit and correct aesthetic alignment.

For the two-tone stainless steel and rose gold case, an alligator strap in black is the most coherent choice: the natural grain enhances elegance without introducing visual competition. Alligator in cognac-brown from vegetable tanning emphasises the rose gold whilst maintaining equilibrium. For sport-elegant wear, Tuscan calf leather or shell cordovan offer superior construction quality with aesthetic evolution over time. Rubber is a contemporary alternative for wrists requiring practicality without sacrificing perceived elegance.

The strap is secured by two spring bars positioned on either side of the case, between the lug and the body. Use a dedicated spring bar tool to apply gentle downward pressure on one end of the bar, freeing the space needed to remove the old strap. Repeat on the other side. To install the new 20mm strap, insert one bar at a time, ensuring the seat is correct. Avoid excessive force that could compromise the spring bar mechanism. If uncertain, entrust the operation to a professional watchmaker.

Yes, it is recommended. An artisanal 20mm strap from specialist ateliers (such as models available on milanostraps.it) offers superior construction quality and material selection compared to industrial aftermarket options. Custom-made straps allow personalisation of length, edge finish, buckle design and even thread colour. Compatibility is guaranteed by precise construction: 20mm lug width, precise hole tolerance, stable materials over time.

Durability depends on material quality and usage. A high-quality alligator or calf strap (vegetable tanned) lasts approximately 5-7 years with daily wear, with patina that improves over time. Shell cordovan, thanks to greater structural rigidity, can reach 7-10 years. Rubber lasts 3-4 years before showing initial signs of ageing. Regular maintenance (periodic cleaning, drying after humidity exposure) significantly extends strap life. An artisanal strap with 18-month warranty provides protection against construction defects.