Strap for Heritage Prestige Yellow Gold / Champagne

The lug width of the Longines Heritage L4.685.2.36.2 is 18mm. This measurement is specific to Heritage models with compact case diameters (35.50mm) and is proportioned to the overall aesthetic of the watch. To verify your model's lug width, use a digital calliper and measure the internal distance between the two case attachment points.

For a yellow gold Heritage, alligator remains the most natural choice: the grain texture dialogues with the brushed finishing of the case and develops a fascinating patina over time. Premium alternatives are vegetable-tanned calf leather (which naturally darkens) and shell cordovan in bordeaux tones, creating an elegant contrast with the gold.

Strap replacement requires specialised tools: a spring bar remover or a small screwdriver. Position the watch with the case facing upward, insert the tool into the fine housing of the pin, apply gentle pressure to extract it, and slide the old strap away. Reinstall the pin on the new strap, aligning it precisely. If uncertain, consult a professional: the risk of scratching the case during the operation is concrete.

Yes, provided the lug width is verified exactly at 18mm. All quality artisanal straps constructed for this measurement are compatible. We recommend choosing specialised suppliers that guarantee precise tolerances: a 0.5mm difference in width can cause unwanted detachment from the case or excessive friction.

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) on a daily-worn watch has an average lifespan of 5-7 years. Longevity depends on frequency of use, water exposure, ambient humidity, and maintenance. Regular cleaning with a dry cloth and occasional conditioning with specific creams significantly extend the strap's life. Casati Milano straps benefit from an 18-month warranty against manufacturing defects.