Strap for Flagship 20 Quartz Stainless Steel Silver

The Longines Flagship L4.215.4.72.6 has a lug width of 10 millimetres. This non-standard dimension requires bespoke straps: measure the internal distance between the case lugs to verify accuracy. Do not confuse this measurement with the case diameter (20.30mm).

Alligator is the supreme choice, offering natural grain and refined patina development. Shell cordovan is exceptional for those who appreciate material ageing. Vegetable-tanned calf leather provides a softer yet elegant alternative. Organic fabric NATO straps suit a contemporary aesthetic. Rubber is not recommended for maintaining the dress watch identity.

Remove the two metal spring bars holding the current strap using a precision tool. Insert new spring bars into the replacement 10mm strap, then attach the strap to the case. Proceed carefully to avoid scratching the steel. If unsure, consult a specialised craftsman.

Yes, Milano Straps offers a dedicated collection of 10mm straps in alligator, shell cordovan, calf leather and technical materials. Straps are customisable in length, colour, stitching thread and initials. Casati Milano creates bespoke straps with personal consultation and 18-month warranty.

Durability depends on material and usage. Vegetable-tanned alligator resists 5-8 years under normal conditions. Shell cordovan, if properly maintained, exceeds 10 years and improves with age. Calf leather lasts approximately 3-5 years. To extend lifespan, avoid prolonged moisture and clean regularly with a soft cloth.