Strap for Lundis Bleus Ref. 1100 Stainless Steel / Rose / Silver Index

The Lundis Bleus 1100-06 features a lug width of 19 mm. This measurement is specific to this model and does not conform to standard conventions (18 mm or 20 mm). It represents a deliberate construction choice intended to maintain correct proportions between the 40 mm case and the dial.

Your choice depends on the intended context. For formal settings, we recommend alligator in vegetable tanning in dark brown or premium shell cordovan. For daily versatility, quality calf leather in neutral tones (grey, blue, black) offers softness and visible patina development. For sporty or casual wear, cotton NATO straps provide practicality and rapid interchangeability. Black FKM rubber rounds out the offering for those seeking total water resistance.

Use a dedicated spring bar tool or consult a professional. Position the watch on soft cloth with the case back facing you. Locate the spring bar retaining mechanism and, gently, extract it towards your body. The spring will retract, releasing the lug from the pin. Insert the new strap by aligning one side first, then the other, ensuring the spring bar seats correctly in its housing.

Yes, provided the strap is specifically constructed for 19 mm width. Bespoke leather straps from milanostraps.it, for example, guarantee this compatibility. Always verify that the internal spacing between the strap's lateral lugs measures 19 mm before purchase. Generic standardised straps (18 mm, 20 mm) will not ensure correct fit.

A premium leather strap (alligator, shell cordovan, calf) subjected to mindful use—avoiding prolonged humid environments or intense rainfall—typically lasts 3–5 years before requiring replacement due to natural wear. Leather develops characteristic patina and character over time. Determining factors include frequency of wear, climate conditions, and maintenance (periodic cleaning, airing). Those wearing the watch only in formal contexts will enjoy longer lifespans. FKM rubber, by contrast, resists degradation for 5–7 years with minimal decline.