Strap for Speedmaster Professional Moonwatch Alaska Project III

The Speedmaster Professional ST 145.0022 Alaska III has a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 20mm. This dimension is rigorously calibrated for the 42mm case and allows you to wear structured straps while maintaining balanced proportions on the wrist. To verify it, measure the distance between the lugs (the case shoulders) with a digital caliper.

For the radial dial of this Alaska III, we recommend a satin <a href="/pages/termine-glossario/alligatore">alligator</a> in black or anthracite, which amplifies the brushed geometry of the case. Alternatively, a calf leather with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> evolves over time creating a patina that synchronizes with the aged steel. Heavy nylon NATO remains the most authentic operational choice in the context of the watch's aeronautical heritage.

The change is simple: position the watch on a stable support, locate the suspension pins (spring bars) at the sides of the case at the base of the lugs. With a dedicated tool or small tweezers, gently compress the pin from bottom to top, extract the spring bar and the old strap slides away. Insert the new strap aligning the holes with the pins, press the pin downward until the insertion click. The procedure takes five minutes and no specialized tools.

Yes, any strap with a <a href="/pages/termine-glossario/misura-ansa">20mm lug width</a> is compatible. Milanostraps offers a specific collection of customizable 20mm straps in leather, material, color and finish, plus the option of a satin steel <a href="/pages/termine-glossario/deployante">deployant clasp</a> for aesthetic coherence with your Omega case.

The durability depends on use and maintenance. A quality <a href="/pages/termine-glossario/alligatore">alligator</a> or calf leather strap with <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> offers 3-5 years of intensive daily use before showing significant wear. If worn occasionally, the same leather can exceed 7-10 years. Our strap warranty is 18 months. To preserve longevity, avoid direct impacts, prolonged moisture and intense sun exposure. Once a year, condition the leather with natural oil to nourish it.