Strap for D15 MK-1 Grey Gold / Black

The lug width of the 102-GHLA is 20mm. This measurement represents the distance between the inner edges of the watch's lugs and is essential for selecting a compatible strap. The 20mm width has been calculated in proportion to the 44mm case diameter to maintain the model's aesthetic harmony.

For the 102-GHLA, we recommend a fine-grain alligator strap, as it creates an elegant material dialogue with the white gold case. Valid alternatives include vegetable-tanned calf leather (which develops patina over time) or a technical fabric NATO for a more contemporary approach. Your choice depends on use context and personal aesthetic preferences.

The strap is changed by removing the spring bars located at the ends of the lugs. Using a dedicated spring bar tool, compress the springs under tension, releasing the old strap. Next, align the new strap and insert the spring bars, then release them once seated. This operation requires care to avoid scratching the white gold case.

Yes, any strap with a 20mm lug width is compatible with the 102-GHLA. Custom-made artisanal straps offer maximum creative freedom regarding materials (alligator, calf, shell cordovan, rubber) and finishes. Before purchasing, always verify that the strap specifications match exactly 20mm.

Leather strap durability depends on material quality, tanning method, and frequency of wear. A vegetable-tanned calf strap of artisanal quality typically lasts 3-5 years with daily use. High-quality alligator reaches 5-7 years. Longevity increases with regular maintenance (cleaning, protective treatment) and by varying strap usage patterns (avoid wearing the same strap daily).