Strap for Heritage Retrograde White

The Longines Heritage L4.797.4.71.2 features a lug width of 20 millimetres. This dimension is consistent across the entire Longines Heritage family and is easily verified by measuring the distance between the two lug holes on the case. Accurate measurement ensures complete compatibility with aftermarket straps and bracelets.

The optimal strap depends on intended use and personal aesthetic preferences. For formal occasions, brown or black alligator offers timeless elegance. Shell cordovan represents a sophisticated alternative for those desiring a leather that develops distinctive patina over time. For daily wear, vegetable-tanned calf provides durability and captivating ageing. For sporting activities, canvas or FKM rubber maintain the Heritage character whilst offering superior practicality.

The strap is changed by removing the lugs from the case using a dedicated spring bar tool. Insert the tool's tip into the hole on the lug spring, push to compress the internal spring, and slide the lug outward. For installation of the new strap, compress the lug spring again and insert it into the case holes until you feel the locking mechanism engage. It is recommended to perform this operation on a padded surface to prevent scratches.

All straps with a 20mm lug width are compatible with the Longines Heritage L4.797.4.71.2. This includes straps in alligator, cordovan, calf, canvas, rubber and other artisanal materials. It is essential to verify that the selected strap is specifically designed for this measurement and that the lugs appear centred and stable on the case once installed.

The lifespan of a leather strap varies based on material, use and care. Quality alligator or shell cordovan, with regular maintenance (cleaning with soft cloth, protection from excessive moisture), maintains structural integrity for 5–10 years. Vegetable-tanned calf, more porous and natural, may require replacement more frequently (3–7 years) due to greater wear. The standard warranty is 18 months, extendable through specialised providers such as Casati Milano atelier.