Strap for OutDoor 39 Protect Stainless Steel / Black / Rubber

The Archimede Outdoor UA8239S-A2.1-H features a lug width of 20 mm, the spacing between the spring bars where the strap is mounted. This measurement is proportioned to the 39 mm case diameter.

The optimal strap depends on intended use: for daily elegance, alligator or vegetable-tanned calf leather enhances refined character; for adventure, a NATO in military tones or natural rubber maximises the tool watch's functional identity.

Release the spring bars using a strap changing tool. Insert the pin into the bar hole, press gently inward to free one lug, then remove the old strap. Insert the new 20 mm strap and allow the spring bar to return to position.

Yes, any 20 mm lug width strap is compatible with the UA8239S-A2.1-H. Verify your lug width with callipers before purchasing. We recommend artisanal leather or NATO straps from specialised suppliers to maintain quality consistency with the watch's philosophy.

A full-grain vegetable-tanned leather strap typically lasts 5-7 years of intensive daily use, developing a natural patina reflecting prolonged ownership. Longevity depends on climate, humidity, and periodic maintenance—gentle cleaning and occasional oil treatments extend lifespan.