Strap for Prestige Gold Cushion 18

The lug width of the Longines L4.230.7.88.6 is 20mm. This measurement represents the distance between the two lugs of the case where the strap attaches via spring bars. Any aftermarket strap intended for this model must be precisely dimensioned to 20mm to ensure proper fitment and secure attachment.

For the L4.230.7.88.6, an alligator strap in cognac brown or black is the optimal choice: the natural texture of crocodile complements the white gold case, emphasising the model's formal character. Alternatively, high-quality calf leather with vegetable tanning offers versatility and develops a natural patina over time. For more casual contexts, shell cordovan in burgundy or vulcanised rubber in black provide stylistic alternatives without compromising the watch's overall elegance.

To change the strap, you will need a spring bar removal tool. Position the watch with the dial facing downward. Insert the tip of the tool into the small lateral groove of one of the lugs, then gently push downward to release the internal spring. Repeat on the opposite side. Once the spring bars are removed, the old strap will slide away. To install the new strap, align the holes at the strap ends with the case lugs and reinsert the spring bars, ensuring they are fully engaged.

An aftermarket strap is compatible with the Longines L4.230.7.88.6 if it features a lug width of exactly 20mm. Verify also the type of spring bars used by your watch (standard, tipped, or pin), as some straps require specific adapters. MilanoStraps offers a complete collection of 20mm-compatible straps, customisable in lengths, initials, and stitching thread, ensuring correct matching with your case.

The lifespan of a leather strap depends on the material, frequency of use, and storage conditions. High-quality alligator or shell cordovan with vegetable tanning can last 5-7 years of regular wear, developing an attractive patina over time. Quality calf leather typically lasts 4-5 years. Constant exposure to sweat, humidity, and UV rays accelerates ageing: store the strap away from direct sunlight when not wearing the watch. MilanoStraps provides straps with an 18-month warranty, and the Casati Milano atelier offers personalised replacement and maintenance services.