Strap for Speedmaster Co-Axial Stainless Steel / Black / Bracelet / Olympic Collection

The lug width is 22mm. This width is specific to the Speedmaster 321.30.44.52.01.001 and ensures proper proportions between the 44.20mm case diameter and the strap. To verify compatibility, measure the lug width internally at the case: it must be exactly 22mm.

For this model we recommend glossy black alligator for formal elegance, brown vegetable-tanned Tuscan leather for sporty wear with vintage patina, blue calf with deployant clasp for versatility, or grey NATO for purist authenticity. The choice depends on your usage environment and aesthetic preference.

Strap replacement requires a simple precision tool (spring bar removal) to disengage the lugs from the case. Insert the tool into the lateral slots on the case, gently push from the opposite side and remove the lug. Reverse the procedure with the new strap. If preferred, Milano Straps offers strap changing service by appointment at the Casati Milano atelier.

Yes, any strap with 22mm lug width is compatible. Milano Straps offers a specialized collection of 22mm straps tested on sports chronographs, with customization options in leather, buckle color and stitching. Always verify that the total length is suitable for your wrist (typically 75-85mm for the center section).

A quality leather strap, if properly maintained, lasts 3-5 years of daily use. <a href="/pages/termine-glossario/concia-vegetale">Vegetable tanning</a> develops protective patina over time and ages elegantly. Alligator is more resistant to wear. Milano Straps offers 18-month warranty on all handcrafted straps and recommends periodic cleaning and conditioning to extend longevity.