Strap for BelleArti 24.6 Modern Diamond

The lug width of the Longines Heritage L2.504.0.88.0 is 20mm. This measurement is essential for selecting a compatible strap: watches with 20mm lug width do not accept 18mm or 22mm straps. To verify the correct measurement, use a digital calliper positioned perpendicularly across the lugs, measuring the internal distance shoulder to shoulder.

For the Longines Heritage L2.504.0.88.0, the most appropriate materials are vegetable-tanned alligator (which recalls the historical texture of the 1930s), shell cordovan (which develops a unique patina over time), and nappa calf (a compromise between softness and controlled ageing). Medium brown or glossy black are the most versatile colours; avoid obvious patterns to maintain the watch's minimalist elegance.

To change the strap, remove both lug pins using a dedicated pin remover tool (available at jewellers). Extract the old strap, insert the new one (ensuring it is 20mm wide), and reinsert the pins until fully locked. If you are not experienced in this operation, entrust it to a watchmaker: Casati Milano also offers this service by appointment.

Yes, absolutely. Any 20mm strap (standard lug width) is compatible with the Longines Heritage L2.504.0.88.0. MilanoStraps offers a selection of straps in alligator, shell cordovan, calf leather and other materials, all customizable in size, initials and stitching thread. The key is to verify that the width is exactly 20mm to avoid looseness or forcing.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) fitted to a Longines Heritage L2.504.0.88.0 typically lasts 5-7 years of regular daily wear, provided it is maintained: dry it if wet, avoid prolonged direct sunlight exposure, and occasionally apply a protective balm. MilanoStraps guarantees 18 months on Casati Milano straps, but longevity depends on individual wear and storage conditions.