Oris
Aquis 01 643 7654 7185-Set MB— lug 20mm

The lug width is precisely 20mm. This measurement corresponds to the internal distance between the shoulder points of the titanium case's integrated lugs. When purchasing a replacement strap, ensure the strap lug holes are dimensioned for 20mm, as the fixed lugs on the 01 643 7654 7185-Set MB cannot accommodate significant tolerances.

The choice depends on your primary use. For technical diving, a NATO or natural rubber strap ensures total water resistance and practicality. For daily elegant-sporty wear, vegetable-tanned alligator or Italian calf leather accentuate aesthetics whilst maintaining robustness. Milano Straps offers leather, NATO and rubber in 20mm, all tested for structural compatibility with this case.

Remove the original strap by sliding the strap lugs out from beneath the titanium case lugs. Insert the new strap by threading the lugs under the case lugs, ensuring they fit snugly without vertical play. If your new strap features a deployment clasp, verify it locks correctly on the outer wrist side. If using a single-pass NATO, wrap the textile around both upper and lower lugs, ensuring the buckle remains accessible on the wrist.

Yes, provided the strap lug width is calibrated for 20mm and the lugs fit the integrated case lugs without forcing. Milano Straps tests every 20mm strap for physical and functional compatibility. Improvisation is discouraged: non-standard lugs cause mechanical stress on the titanium case and compromise crown water-resistance sealing.

A vegetable-tanned leather strap typically lasts 2-4 years with daily wear, provided it is dried regularly after water contact (showering, recreational diving). Repeated technical immersion shortens longevity. To extend lifespan, alternate with NATO or rubber straps during intensive diving periods. The patina that develops is normal ageing, not structural deterioration.