Strap for Aquis Date Diamonds 36 Stainless Steel / Black - Diamond / Bracelet

The lug width is exactly 18mm. Measurement is performed by positioning a digital calliper between the internal shoulder points of both lugs on the case. This dimension falls outside standard industrial lug widths (14mm, 20mm, 22mm), thereby requiring a bespoke handcrafted strap.

The choice depends upon intended use and personal preference. A chrome-tannin alligator in medium brown offers timeless elegance and reliable ageing characteristics. A vegetable-tanned calf leather provides aesthetic versatility and develops patina over months. An FKM rubber strap is ideal for actual water immersion use. A grey-anthracite NATO cordura strap emphasises the sport-tool character whilst maintaining restraint.

Use a standard spring bar removal tool or a thin pointed implement. Position the watch with lugs facing upward, insert the tool beneath the flat spring of the bar, apply gentle pressure whilst simultaneously extracting the old strap laterally. Repeat on the opposite lug. Installation of the new strap follows the reverse procedure.

Yes, any bespoke handcrafted strap manufactured with 18mm spring bars is compatible. Specialist strap retailers, such as Casati Milano and its online network, produce custom straps in alligator, calf, cordura and technical rubber. Communication of the exact lug width (18mm) at order placement is essential.

A high-quality leather strap—chrome-tannin alligator or vegetable-tanned calf—typically endures 3 to 5 years under moderate daily wear, with periodic maintenance (gentle cleaning, rapid post-rain drying, neutral wax conditioning annually). Longevity depends upon frequency of wear, humidity and perspiration exposure, and initial material quality. An FKM rubber strap lasts 5–8 years with minimal maintenance required.