Strap for Aquis Date 39.5 Stainless Steel / Black / Bracelet

The Oris Aquis 01 733 7732 4124-07 8 21 05EB features a 20mm lug width, measured between the inner shoulders of the case lugs. This dimension is standard across most Aquis models in the 39.5mm case diameter and has been optimised to deliver balanced proportions and sustained wrist comfort.

Selection depends on intended use. For formal-sporting contexts, a dark brown alligator or black calf leather with deployant clasp delivers sophistication without technical compromise. For aquatic environments, a navy NATO or dark grey rubber respects the diving watch nature of the timepiece. The 20mm lug width accommodates all these options without weakening the lug attachment.

Remove the strap using a spring bar removal tool. Position the tool in the lateral groove of the lug, gently press to compress the internal spring, extract the old pin and insert the new strap. The lug shoulders must seat perfectly in the case recesses before releasing the spring.

Yes, any bespoke strap with 20mm lug width is compatible. Milano Straps offers custom-made straps in leather, NATO and rubber precisely dimensioned for this specification. It is advisable to verify that the lug shoulders are slightly curved to fit without friction against the stainless steel and ceramic case contours.

A quality leather strap (Nile alligator or vegetable-tanned calf) typically lasts 3-5 years with proper care, even on a diving watch. Salt and humidity exposure accelerates ageing; for frequent aquatic environments, a NATO or rubber strap represents more durable choices without aesthetic compromise.