Strap for OutDoor 39 Protect Stainless Steel / Lume / Leather

The Archimede Outdoor UA8239-A1.1-H features a lug width of 20 millimetres. This measurement must be taken between the inner edges of the two suspension lugs on the case, maintaining the ruler parallel. It is essential to measure the lug itself and not the visible gap between the lugs to ensure proper compatibility.

For the UA8239-A1.1-H, we recommend straps in American alligator or Nile crocodile in neutral tones (brown, black), or English calfskin with vegetable tanning. These materials preserve the instrumental aesthetics of the case. Thick cotton NATO represents the functional alternative for genuine outdoor activity, whilst technical rubber offers maximum practicality in summer conditions.

Strap replacement is performed by removing the spring bars (lugs) that anchor the strap to the case lugs. Use a flat, thin instrument, gently push the spring bar from one side, slide out the old strap, insert the new one by aligning the holes with the case lugs, then reinsert the spring bar until fully locked. We recommend operating on a flat surface with adequate lighting.

Yes, any strap with a 20mm lug width is compatible with the Archimede Outdoor UA8239-A1.1-H, provided the measurement is performed with precision. Artisanal leather, silk, rubber or technical material straps at 20mm allow aesthetic personalisation whilst maintaining the functional coherence of the instrument. Always verify the lug width with the supplier before purchase.

A quality calfskin strap with vegetable tanning maintains full functionality for 2 to 4 years with moderate daily wear, developing a natural patina that imparts character. Longevity depends on sun exposure, humidity, frequency of wear, and the quality of initial tanning. The strap is not a consumable component but a living element that evolves aesthetically, requiring occasional cleaning and natural lubrication.