Strap for Mirage 38 Prussian Blue

The lug width of the Berneron Mirage M38PB is 20 millimetres. This measurement corresponds to the distance between the two lugs of the case and determines the width that the strap must have to fit correctly without play or forcing. A 20mm strap is the only compatible size for this model.

For the M38PB, we recommend alligator in dark brown or black tones on vegetable-tanned calf leather. Both options dialogue elegantly with the white gold case. The strap should have moderate thickness (1.2-1.5mm) to avoid visually overwhelming the contained proportions of the model. NATO straps in discrete technical canvas or slate grey rubber are also excellent choices for a more contemporary interpretation.

Strap replacement is accomplished by removing the two lateral lugs that secure the strap to the case. Use a spring bar tool to compress the internal spring of each pin, releasing them from the case holes. Insert the pins into the new 20mm strap and reposition them in the case attachments until you hear a click. Verify that the strap is firmly secured before wearing.

Yes, the M38PB is compatible with any quality aftermarket strap with a 20-millimetre lug width. We recommend choosing brands specialising in artisanal straps that guarantee premium materials (alligator, calf, shell cordovan) and precise finishing. Always verify that the strap has been crafted with care in its details—regular stitching, well-proportioned lugs, no gaps between the pins and the case.

A quality leather strap, vegetable-tanned, typically lasts 3-5 years with daily wear and routine maintenance. Durability depends on usage, storage and climate conditions. Premium alligator and calf leather age better than common leathers, developing patina and character over time. Rubber and technical NATO straps have superior durability, lasting up to 7-10 years, though they retain less charm as they age.