Strap for OutDoor 39 Protect Stainless Steel / Lume / Leather

The lug width of the UA8239-A1.2-H is 20mm. This is the distance between the two lugs that hold the strap. It is not a common standard width in the watch market, making it essential to select a strap specifically crafted to this precise dimension.

To maintain the instrumental character of the UA8239-A1.2-H, we recommend hand-dyed alligator or vegetable-tanned calf leather. Both develop patina over time and harmonise beautifully with the brushed stainless steel case. For more sport-oriented use, a ballistic canvas NATO or vulcanised rubber strap ensures complete water resistance.

The UA8239-A1.2-H features removable spring bars connecting the case to the straps. Using a spring bar tool, apply gentle pressure on the pin from inside the case lug, releasing one end of the strap. Repeat symmetrically on the opposite side. The procedure is standard for any watch with spring bars, but care must be taken not to scratch the brushed finish of the case.

Yes, provided they have a 20mm lug width. Not all aftermarket straps are manufactured in this size, as 20mm is not as common as 18mm or 22mm standards. Always verify the lug width specification before purchase, and consider working with artisans who specialise in bespoke sizing.

A vegetable-tanned leather strap typically lasts 3-5 years with daily wear, depending on exposure to water and humidity. Alligator leather resists slightly longer due to the natural water resistance of the scales. Deterioration is not a construction flaw but part of an authentic watch narrative: patina and creasing are markers of genuine history.