Mido
Multifort M040.427.16.052.00— lug 21mm

The lug width of the Mido Multifort M040.427.16.052.00 is 21 millimetres. This measurement is critical when selecting a compatible strap: it must be measured between the inner walls of the case lugs, from side to side. A 21mm strap ensures proper fit without gaps or overlaps.

The Multifort pairs well with alligator leather straps for formal elegance, or vegetable-tanned calf leather for a more natural, patina-developing finish. For a sportier approach, a NATO fabric strap or FKM rubber maintains the chronograph's technical character. Your choice depends on intended use and the watch's specific dial variant.

Strap replacement is accomplished via spring bars located at the ends of the lugs. Using a dedicated strap tool or small flat-head screwdriver, gently compress the spring bar to release it from the case slot, carefully remove the old strap, insert the new strap into the opposite slot, and release the spring bar. This operation requires care to avoid damaging the case lugs.

Yes, provided the aftermarket strap has a 21-millimetre lug width. Straps manufactured by specialist makers guarantee precise fit, consistent finishing, and longevity. It is advisable to verify compatibility by checking the spring bar and manufacturing tolerances before purchase.

A quality leather strap, whether vegetable-tanned or chrome-tanned, typically lasts 3–5 years with regular daily wear. Longevity depends on maintenance (periodic cleaning, drying after moisture exposure), sun exposure, frequency of watch changing, and leather type. Alligator tends to last longer than calf leather, owing to its more robust fibrous structure.