Strap for Defy El Primero 21 Chroma II

The lug width is 23mm. This parameter represents the distance measured from the inner shoulder of one lug to the other, passing through the centre of the case. In the case of the Defy 49.9014.9004/01.R953, it is fixed at 23mm and solely determines the mechanical compatibility of the strap with the titanium-ceramic case.

We recommend vegetable-tanned calf leather dyed in paddy-field tones in dark brown or deep black, deliberately contrasting with the cool modernity of the titanium case. Alternatively, superior-quality alligator in graphite blue dialogues magnificently with the dark ceramic inserts. For sporting contexts, vulcanised FKM rubber offers superior grip and flexibility.

The change is performed by removing the spring bars connecting the lugs to the case. Use a specialist spring bar tool for titanium sports watches, as the rigid case does not tolerate improvised instruments. Support the case laterally to avoid anomalous torsion. The new strap must feature identical 23mm lugs and total length calibrated for your wrist.

Yes, provided it is dimensioned precisely at 23mm lug width. Quality aftermarket straps maintain the same construction standards as the original, with the additional advantage of material and chromatic choice. Milano Straps produces artisanal customisable straps specifically for this measurement, with 18-month warranty.

A strap in traditionally vegetable-tanned leather lasts 4-6 years with regular daily use (5-7 days per week), provided adequate maintenance: monthly cleaning with damp cloths, natural air-drying, avoiding prolonged soaking. Vegetable leather develops characteristic patina that increases aesthetic appeal over time. FKM rubber lasts 5-8 years before appreciable stiffening. Alligator, being denser, can exceed 7 years while maintaining elasticity.